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1[[quoteright:290:https://static.tvtropes.org/pmwiki/pub/images/Hardy_boys-747069_9476.jpg]]
2
3->'''Homer:''' These Hardy Boys books are great too! This one's about smugglers.
4->'''Bart:''' They're ''all'' about smugglers.
5-->-- ''WesternAnimation/TheSimpsons'', "The Wizard Of Evergreen Terrace"
6
7A LongRunningBookSeries of mysteries for kids and teens, published under the [[PenName pseudonym]] of Franklin W. Dixon. They follow the adventures of Frank and Joe Hardy, a [[SiblingTeam pair of brother detectives]]. Frank is the logical, calm one, and Joe is the more impulsive, instinctual one. The series (alongside their DistaffCounterpart and frequent {{crossover}} partner Literature/NancyDrew) invented or popularized most of the KidDetective tropes. It's also very prominent for the abundance of {{Tom Swiftie}}s in the narrative.
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9The series was created in 1927 by the Creator/StratemeyerSyndicate, a prolific group of ghostwriters under the direction of Edward Stratemeyer (and his daughters, who took over when Edward died in 1930) that put out many successful children's books. Canadian writer Leslie [=McFarlane=] was the original writer of the first 16 books, writing them only to pay his bills and feed his family (getting ~$100 US for each book, with no royalties, which wasn't all that bad at the time; a large number of the original Stratemeyer ghostwriters were journalists, and using journalist salaries as comparison, $100 per book was roughly six weeks' salary for four weeks' work), and dreaded having to write the books (referring to the books in his diary as "the damn juveniles"), and by the mid-30s other writers began to write the books as well (such as John Button, whose books are infamous for their use of sci-fi elements, inconsistencies, and strange plots), leaving [=McFarlane=] free to forget about the books and write his own stories.
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11In the late 1950s until the early '70s, the first 38 books were revised and rewritten to update the stories, eliminating outdated terminology ("chum", "roadster", etc.), removing politically incorrect terms and stereotypes ("Negro", "swarthy foreigner", "Chinaman", "colored", etc.), and shortening the books from 25 chapters to 20 chapters. Newer books were also made, with the "original" series coming to an end in 1979 with #58. The original editions can be recognized by having dust jackets and plain brown (and later, tan "tweed") covers; the revised versions, beginning in 1961, have the cover picture printed directly on the book to better withstand being used and abused by kids.
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13After the books were acquired by Simon & Schuster (which took control of Grosset & Dunlap in the 70s after a lawsuit), the series was continued as "Digests". Later on, the DarkerAndEdgier ''Casefiles'' series was added and ran concurrently with the Digests. Both series have since been discontinued, the ''Casefiles'' in 1998 and the Digests in 2005. The series has since continued under the ''Undercover Brothers'' subtitle, which reinvents the brothers as agents working for an all-teen secret agency; there is also a corresponding graphic novel series. It was discontinued in 2012 after 42 books[[note]]39 regular volumes and 3 special edition "Super Mysteries"[[/note]] and 20 graphic novels. One year later in 2013, it was replaced with the currently-running ''Hardy Boys Adventures'' series (with 25 volumes published as of this writing), which sees the boys return to amateur detective status.
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15The characters have been adapted to both [[Series/TheHardyBoys2020 live]]-[[Series/TheHardyBoysNancyDrewMysteries action]] and [[WesternAnimation/TheHardyBoys animated]] TV series. They seem a bit prone to a CrossOver with ''Literature/NancyDrew''.
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17Definitely ''not'' to be confused with the professional wrestling tag team The [[Wrestling/MattHardy Hardy]] [[Wrestling/JeffHardy Boyz]].
18
19----
20!!This series provides examples of:
21[[folder:A-K]]
22* [[AbsurdlyYouthfulMother Absurdly Youthful Father]]: Tom Collig from the Detective Handbook short story "The Secret of the Empty Page" has only been on the force for a few weeks but is mentioned as having a wife and three kids.
23* AccidentalTruth: In "The Stone Idol", the brothers bluff a confession out of the bad guy (after realizing who he is but lacking evidence) by claiming that he was witnessed stealing the titular idol by a man who can identify him, and that his business partner has just checked the books and realized he's StealingFromTheTill. After the man confesses, they admit their deception, eliciting an angry reaction from the perp as he's led from the room. Seconds later, the boys get a phone call from the man's business partner, who ''has'' in fact been looking through the books and found evidence of embezzlement. The book ends with them chuckling about the irony.
24* AchievementTestOfDestiny: Zigzagged in the Digest book "The Test Case". Stolen test answers are found in the Hardys' friend Tony's backpack while a shady tutoring agency starts advertising their services by hinting they have the answers to the test. About a dozen approached students refuse outright and tell the Hardys about the offer due to not seeing the test as anything to worry about. However, a DumbJock with bad grades and a girl desperate to get into a prestigious college are suspected of taking the offer to buy the exam answers. [[spoiler:No one is actually cheating. The whole purpose of the theft is to frame the jock for cheating and get him banned from the hockey championship game. The culprit mistook Tony's bag for the jock's.]]
25* AdaptationNameChange: Happens sometimes between the originals and the reprints. In the original version of "Hunting for Hidden Gold" Bart Dawson's prospecting partners were the Coulsen Brothers (Jack and Bill) and Jadbury Wilson. In the reprint, the Coulsens are renamed John and James, and Wilson's counterpart is named Mike Onslow.
26* AerithAndBob: Much like Literature/NancyDrew, there have been a few names that have fallen out of favor since 1927, and now come across like this. Just look at their close circle: Frank, Joe, Tony, Phil, Jerry, and Callie are quite common, Chet and Biff are marginal (and nicknames for Chester and Allen, anyway), but Iola just completely sticks out. Considering she was replaced with a girl named "Vanessa" in the ''Casefiles,'' it's possible the publishers thought so, too.
27* AllBikersAreHellsAngels: The Sinbads, who appear in a ''Casefiles'' book, fit this pretty well.
28* AloofAlly: In the ''Casefiles'' series, the Gray Man and, by extension, the Network he works for.
29* AlternateContinuity: There's several different continuities, as the publishers try to keep the series relevant to modern kids. There's the "Blue Spines", which is the blue hardcover books & digests (and that's broken down to the Original Texts and the rewrites of the '70s), the ''Casefiles'', ''Undercover Brothers'', the ''Clues Brothers'', the new ''Adventures'' series, and the second "New Case Files" series which has little to do with the first. The various TV incarnations (Series/TheHardyBoysNancyDrewMysteries of TheSeventies (the best known), Series/TheMickeyMouseClub serials of the 50s, and ''The Hardy Boys'' of the '90s [[Series/TheHardyBoys2020 and of 2020]]) are also considered separate continuities, with varying degrees of faithfulness to the printed tales.
30* AlwaysSaveTheGirl: While the Hardy Boys are willing to risk ''their own'' lives to protect TheNeedsOfTheMany, they refuse to allow innocents to be put in harm's way. Whether it's their family, friends, girlfriends/LoveInterests, or even just the [[GirlOfTheWeek new friend of the week]], if any of the above are put in danger during a case, the Hardys will always prioritize saving them over everything else and will take whatever risks are necessary to do so, no matter how reckless or dangerous it may be.
31* AmnesiacHero:
32** In both versions of "Hunting for Hidden Gold", Bart Dawson lost his memory due to an injury received at the hands of thieves while he was fleeing with the titular gold to draw the thieves away from his partners. In the original draft, his memory came back gradually over the years, causing him to find one of the Coulsen Brothers as he went back to retrieve the gold. In the reprint, his memory only returns much later (at the cost of losing the memories of the new life he established while amnesiac) when he encounters one of the villains by chance and is struck in the head by him during a scuffle, assisting the brothers in the final act afterwards.
33** The original version of "The Secret of the Caves" has the boys looking for someone named Todham Todd. During their investigation, they encounter a violent and highly insane man who goes by "Captain Royal" living in the caves off the coast, who holds them prisoner and attempts to kill them multiple times. It turns out that Captain Royal is actually an amnesiac Todd, and after being knocked unconscious and left comatose, he gets his original memories back when he wakes up, and turns out to be a perfectly nice, harmless person who has no recollection of the [[AmnesiacDissonance violent alternate life]] he lived as Royal.
34** Joe himself becomes one in "Brother Against Brother" of the ''Casefiles''. When he's sent on a mission to warn a father and daughter in witness protection that a hitman is coming for them, said hitman ambushes him, locks him in a car, and pushes the car over a cliff. Joe survives, but doesn't remember his name and only has a vague recollection that he had something important to do. The incident also causes his memories of Frank to become warped enough that he spends most of the book thinking that his brother, who eventually followed after Joe on the mission to save him when he disappeared, is the hitman. Joe's unable to prevent the father from being murdered, but does manage to protect the daughter, and after Frank shows up to rescue both of them, Joe finally gets his memory back.
35* AnchorsAway: The reprint of "What Happened at Midnight" features a {{Mook}} named Anchor Pete who appears on the cover about to throw an anchor at the brothers.
36* AnimatedAdaptation: CBS had a cartoon version which ran 34 episodes from 1969-1971.
37* AnswerCut: In "The Borgia Dagger" from the Casefiles series, after UpperClassTwit Tessa Carpenter loses most of her money, the brothers reflect on how she has to get a job now, but wonder what she'd possibly be skilled enough to do. Then they happen to walk past a TV showing a soap opera and take a look at the actress playing an over-dramatic rich girl...
38* AssassinationAttempt: The boys have to thwart a good number of these--sometimes the would-be victims are clients whom they're bodyguarding, while other times, they're important leaders or diplomats. This even includes the US President in "Flight Into Danger".
39* BadassBiker: Jessica Derey from "Fear on Wheels" is a pretty stunt rider who wears a leather jacket, isn't afraid of a Biker gang, and is famous for once jumping her bike through a DeadlyRotaryFan.
40* BigBadFriend: Many, many, many books have the Hardys' new friend of the week, a friend of one of their friends, or an "old friend" of Fenton's turn out to be in on the plot, sometimes just as an accomplice and other times as the ringleader.
41* BigEater: Chet Morton, but both Hardy Boys seem to qualify as well. Joe sometimes rivals Chet's, and Frank, well...
42-->'''Callie''': We polished off a huge pie at Mr. Pizza's. And I only had two slices.
43* BigFriendlyDog: Biff's Great Dane, Tivoli, in some of the reprints.
44* BlastingItOutOfTheirHands: GirlOfTheWeek Alicia Powers does this to a {{Mook}} in "The Number File" of the ''Casefiles''. Somewhat justified, as she's revealed to be a local trap-shooting champion.
45* BluffTheImposter: In the Super Mystery "Stage Fright" the brothers are on the receiving end of this from a suspicious theater employee.
46--> '''Damien:''' So what shows have you done?
47--> '''Joe:''' Uhh. ''Theatre/ByeByeBirdie''. ''Theatre/TheMusicMan'', you know, the usual.
48--> '''Damien:''' So you guys are big [[Creator/StephenSondheim Sondheim]] fans? Me too."
49--> '''Joe:''' We love him. Now if you don't mind, I have to-"
50--> '''Damien:''' That's funny. Because none of those shows are by Sondheim.
51* BodyguardCrush: Happens to both brothers occasionally, though probably a bit more often with Joe, and especially in series where the boys don't have steady girlfriends already like ''Undercover Brothers'', ''Adventures'', and the ''Casefiles'' for Joe. They also sometimes end up having to bodyguard their actual girlfriends, especially Frank for Callie in the ''Casefiles''.
52* BornDetective: Since Fenton Hardy was a private investigator, it would seem Frank and Joe were doomed to be as well.
53* BountyHunter: "Nowhere to Run" features a private detective called "Dead or Alive" Sims who specializes in fugitive recovery and brings about a quarter of his targets back in body bags. Sims provides a little aid against other antagonists of the book but spends most of his page time relentlessly pursuing Joe's WrongfullyAccused friend.
54* BrainsAndBrawn: Respectively, Frank and Joe themselves are often compared to each other like this. Downplayed, though, in that Joe is still very smart and comes up with some great plans, and Frank is almost as strong and as good of a fighter.
55* BumblingHenchmenDuo: There are plenty of henchmen duos in the series, such as the unnamed thugs in "The Short Wave Mystery", Ringer and Ceaser from "The Desert Giant" and Nick and Rudy in "Past and Present Danger".
56* BusmansHoliday: Vacations and holidays are a good excuse for when the Hardys have to spend "overtime" in their work without worrying about school. Especially when a case will take them out of the States.
57* CainAndAbel: Happens from time to time.
58** In "Cave Trap", Dirk [=McCall=] is a scheming criminal willing to endanger the lives of the rest of the cast, including his brother Buddy, for a shot at riches.
59** In "Murder by Magic", {{Stage Magician}}s Dr. Savant and Gideon the Great are brothers, and Savant (the BigBad) has no hesitation in trying to frame and murder his brother out of both jealousy and to make a DeceasedFallGuyGambit.
60** One of the characters in "No Way Out" although not the main villain, killed his brother in a fight prior to the story, although he says it was an accident.
61** The villain of "Rough Riding", who is trying to kill the boys' client, Buck, turns out to be his long-lost brother who was recently released from jail. He hopes to frame Buck's wife for the murder to prevent her from receiving Buck's inheritance, so that he himself, as the next closest of kin, will get the money instead.
62* TheCaseOf: The series used this a few times, with titles like "The Case of the Counterfeit Criminals" and "The Case of the Psychic's Vision".
63* CasualDangerDialogue / DangerDeadpan: Both brothers are very prone to this, due to their [[DeadpanSnarker snarky personalities]] and NervesOfSteel.
64* CharacterizationMarchesOn: Several characters were portrayed rather differently in the first few editions of the original books before settling into more solid characterization for the rest of the series:
65** Tony Prito (who is Italian-American) and Phil Cohen (who's from a Jewish family) initially adhered to stereotypes about their respective groups--namely, GratuitousItalian for Tony and NiceJewishBoy for Phil--before this was soon, thankfully, phased out in favor of treating them no differently than any of the Hardys' other friends.
66** Early books showed Joe being quite shy around girls who flirted with him, and especially Iola Morton (who was soon written as his steady date/girlfriend), which is quite hilarious in hindsight considering that in the ''Casefiles'', ''Undercover Brothers'', and ''Adventures'' and their spinoffs, Joe is the much more flirtatious and girl-crazy of the brothers while ''Frank'' becomes the one who's more awkward and shy.
67** Aunt Gertrude was initially written as a genuinely unpleasant and domineering woman whom none of the Hardy family particularly liked and only tolerated when she foisted herself on them for periodic visits, and who greatly intimidated the Hardy Boys. She was also implied to be an aunt of Laura's (and thus a great-aunt to the boys), since she referred to Fenton on a FullNameBasis. She was soon rewritten into her classic and much-beloved characterization as the TropeCodifier of the MaidenAunt, becoming Fenton's older sister who permanently lives with the family, and though she scolds the boys for getting into danger, she's also very protective and proud of them and frequently makes them delicious food, while they in turn sincerely love her and consider her just as much a part of the family as they do their parents.
68** Bayport police officer Con Riley was initially portrayed similarly to Oscar Smuff: an utter idiot and a textbook example of PoliceAreUseless, who, despite regarding the Hardys with a NotNowKiddo attitude and acting like he knew better, was constantly upstaged by them. While this portrayal remained in place for Smuff--who was phased out after the original series--Riley evolves by the time of the Digests and ''Casefiles'' into a competent cop, ReasonableAuthorityFigure, and the boys' most trusted FriendOnTheForce (moreso even than Chief Collig, thanks to the latter butting heads with them often and disliking them solving cases before him). In many books where the brothers are investigating cases outside of Bayport, they'll even call Con for information like background checks and running license plates.
69* CheatersNeverProsper: Played straight in most to all stories involving races or athletic competitions. In "Speed Times Five" from the Digest series, Kelly Hawk invokes this while balking at her crew's suggestion that they cheat, telling them in no uncertain terms to either drop the subject or quit, since 1) they'd probably get caught if they tried, 2) it would shame their friends and families whether they got away with it or not, and 3) she has a good chance of winning honestly anyway (which she does).
70* ChekhovsHobby: Mostly in the Originals/Digests:
71** Chet Morton and his loads of hobbies that seems to change for each book.
72** Frank and Joe are both guilty of this too.
73* ChewOutFakeOut: By the end of the ''Casefiles'' book "Blown Away", Frank and Joe have uncovered an international conspiracy, saved two African countries (Bhotai and Katara), and cleared the name (albeit AcquittedTooLate) of their friend's boss (and mentor) from smuggling charges. The president of Katara then sternly asks if they were also responsible for blowing up his country's new weapon that cost his treasury millions of dollars. Frank contemplates that he and Joe might be used as scapegoats, but when they bravely admit their guilt, the Kataran president is instead actually grateful to them.
74* ChromeChampion: A non-superhero version is used in "Wreck and Roll" when Julie, the lead singer of the band Vette Smash, wears a chrome outfit onstage.
75* CityOfAdventure: A lot of stuff seems to happen in good ol' Bayport. Also averted, since the brothers travel all over the world when they stumble into mysteries. For the Hardy Boys, it's slightly justified; Bayport was a port city (duh), so some smuggling was expected. It makes less sense in Nancy Drew's hometown River Heights (although both were suburbs of cities which were known for mafia activity, New York and Chicago.)
76* ClassyCatBurglar:
77** Charity in the ''Casefiles'', and similarly Fiona Fox in the '88 Super Mysteries crossovers. In each case, the woman in question only appears twice throughout the series.
78** In "Maximum Challenge", Kendra Cassidy (a skilled climber and alarm expert) started out stealing to pay her bills while trying to get a break in Hollywood. Since getting that break, Kendra has been anonymously repaying her victims, but is blackmailed into committing more robberies by a man who knows about her criminal past.
79* ClearMyName: The first three volumes of the ''Casefiles'' series all have one or both of the Hardys charged with murder as part of the villains' plot, and have to do this in addition to stopping the bad guys.
80* CliffHanger: The Stratemeyer Syndicate actually insisted in their outlines to ''Hardy Boys'' ghostwriters every chapter end with one. It is a directive that has been carried through to almost every book to this day.
81* TheCoatsAreOff: In "Wreck and Roll" during the fight between the two rival bands, Ray (the Vette Smash keyboardist) takes off his leather jacket and starts swinging it like a whip.
82* CoolBike: The Hardys use motorcycles numerous times across the various series. In ''Undercover Brothers'', they actually each have their own, and regularly drive these instead of their van from the Digests and ''Casefiles''.
83* CoolBoat:
84** The ''Sleuth'' in the original/Digests series. Who knew that a term for a detective would be a good name for a boat?
85** Their friend Tony's boat, the ''Napoli'', also qualifies, as it's used to help them out on a number of occasions.
86* CoolCar: Several of them throughout. Though subverted for the Hardys in the early books, where their car is described by Chet as looking like a million dollars but driving like thirty cents, and can barely make 15 miles an hour.
87* CoolPlane: The Max-1 and Max-2 in the ''Casefiles'' book "Flight into Danger". Unfortunately, their advanced technology is very dangerous, such that the man who invented them, the BigBad, plans to use them to assassinate the President. Both planes get destroyed in the climax of the book, and the good guys decide that this is for the best.
88* CoversAlwaysLie: In general, the cover illustrations of the books in every series depict a scene from each one, or at least contain an image of the general theme of the adventure (such as the first half the the ''Undercover Brothers'' books). However, there are still several examples of rather misleading covers throughout the books:
89** Callie is one of the boys' few friends to show up in the cover illustrations of any of the series, making several appearances on the front of various ''Casefiles'' books. However, whenever she's shown clinging to one of the brothers in the picture, or them to her, it's usually Joe, even though she's ''Frank'''s girlfriend (and many times was indeed actually clinging to Frank during the scene in question from the book). Conversely, if a GirlOfTheWeek who acts as Joe's LoveInterest in the story is shown on the cover, she's often paired up with Frank there.
90** The ''Adventures'' books have at least two early offenders where the covers show Frank and Joe dangling from precarious places--a Ferris wheel in "The Vanishing Game" and a ship's mast in "The Battle of Bayport"--that, in the book proper, each turn out to just be from a [[AllJustADream nightmare]] Frank has that's mentioned in a sentence or two and never brought up again. One really gets the feeling that the writers didn't feel like there was anything that happened during the plot that would make for an exciting cover image, or that they couldn't find a way to work the scene depicted in the illustrations into the book proper, and just threw in those "nightmare" sequences as weak justification.
91* CrazyJealousGuy: Liam Sullivan in "Hazed" from the ''Undercover Brothers'' series is the most friendly and non-malicious of the upperclassmen...except if he thinks you're showing interest in his girlfriend, Emma. The Hardys discover this firsthand when, as punishment for supposedly flirting with her, Liam and his fellow classmates tie them up, gag them, and throw them in the lake, nearly drowning them both to the point that Frank has to be resuscitated. (Though Liam does have a HeelRealization as a result, and accepts that he crossed the line and should be punished for it).
92* CrossOver:
93** With ''Literature/NancyDrew'' for several of their different respective continuities:
94*** The "[[GameBooks Be a Detective]]" and "Super Sleuth" short-story series both use the original/Digests continuities of both series, and run for 6 issues and 2 issues, respectively. These are their only crossover series that don't feature any romance between the Hardys and Nancy or her friends; they're just platonic friends who've known each other a long time.
95*** The first "Super Mysteries" line has the ''Casefiles'' continuity and the corresponding ''Nancy Drew Files'', and is by far their longest-running crossover at 36 volumes. Once again, the Hardys and Nancy already know each other at the time of the first book, having first met when Nancy was an exchange student in Bayport.
96*** The second "Super Mysteries" combines ''Undercover Brothers'' and Nancy's ''Girl Detective'' series, and is also 6 books. This time around, the boys meet Nancy and her friends for the first time in the first book, wherein the girls become some of the very few people to learn about their work with ATAC and are [[SecretKeeper Secret-Keepers]] for them for all subsequent volumes.
97*** While the ''Hardy Boys Adventures'' and ''Nancy Drew Diaries'' don't have a full crossover series, the Hardys guest-star in the ''Diaries'' Christmas special, "A Nancy Drew Christmas", which is also referenced once in ''Adventures''. Like the above example, this book is the first time that the brothers and Nancy meet in this continuity.
98*** There have been several crossovers in various graphic novels as well, including with their respective ongoing graphic novels series as well as several one-shot stories by different authors using both sets of characters.
99** The ''Casefiles'' continuity crosses over with the 90s series of ''Literature/TomSwift'' in the two "Ultra Thriller" books.
100* DaChief:
101** Bayport police chief Ezra Collig, whom the boys frequently end up working with during their Bayport-based investigations (usually by solving the cases before the police can). He's a lazy, unimaginative politico in the original books; a ReasonableAuthorityFigure in the reprints, most of the Digests, and ''Undercover Brothers''; and an overzealous {{Jerkass}} (albeit one with a HiddenHeartOfGold who gets some PetTheDog moments) in the ''Casefiles'' and a few of the Digests.
102** In the ''Adventures'' series, he's technically replaced by a "Chief Olaf", but Olaf is pretty much Collig in all but name, including his fluctuating relationship with the boys depending on the book.
103* DarkerAndEdgier:
104** The original edition of "The Sinister Signpost" features a vaguely middle-European villain named Vilnoff who tries to destroy Bayport, and kills himself via electrocution to avoid arrest.
105** The ''Casefiles'' series. Iola Morton is Joe's long-running girlfriend in the original series, and gets blown up by terrorists seconds before the opening scene of ''the first book''. Not to mention that some cases would place tension between the brothers, which would often lead into not-so-friendly brawls between them. Later, it also modifies their relationship with the police (which is scarcely a problem in the original series), with an AscendedExtra of sorts in Con Riley as the only officer that takes their skills seriously. They also use guns, bad guys regularly try to JustShootHim, and murders and deaths occur much more frequently among side characters and bad guys. And then there are the Assassins, the terrorist group responsible for Iola's aforementioned murder, and are also the most frequently recurring villains in the series who, well...[[ExactlyWhatItSaysOnTheTin do exactly what you might expect]].
106** To a lesser extent, the ''Undercover Brothers'' series to the originals and Digests, which it directly replaces/succeeds as the main ''Hardy Boys'' canon (unlikes the ''Casefiles'', a spin-off series). Though ''Undercover Brothers'' isn't '''as''' graphic as the ''Casefiles'', almost every book still includes at least one death (occurring either before the story as the case that the brothers have to solve, during the plot itself, or both); in contrast, the originals and Digests, while certainly having many cases of the villains ''trying'' to kill the boys, contained very few actual deaths.
107*** One particular example for the ''Undercover Brothers'' series would be the Lost Mystery Trilogy[[note]]consisting of books 34-36 in the series: "The Children of the Lost", "Lost Brother", and "Forever Lost"[[/note]], where the criminals abduct children and raise them in an underground bunker designed like a preschool in a ''very'' misguided attempt to give them happier, more carefree lives than what they would have in the real world. All the children are kidnapped from normal, loving families when they're very young, and some of them have lived ''more than half their lives'' away from their parents. The kids are regularly drugged in an attempt to alter their memories and make them forget about everyone they used to know; they all miss their families and want to go home, but have to pretend to be happy there or they'll be pumped full of more drugs. Frank is later captured by the BigBad as well to be added to the "collection", while Joe is left frantically searching for him. The story is chock-full of parental fears as it doesn't shy away from showing how emotionally devastating and heartbreaking it is for the families of these children to lose them and believe they'll never see them again. To top it off, this is one of the very few instances of DeathOfAChild in the entire series; one of the kids, a little girl of around 10, died before the events of the story from being given too many of the drugs. All in all, it seems way more like something you'd expect to see on an adult crime procedural rather than a children's series like The Hardy Boys.
108* ADayInTheLimelight: Since ''The Hardy Boys'' has a decent-sized supporting cast of recurring characters, especially in the Digests and ''Casefiles'', this happens quite often.
109** Several Digests and ''Casefiles'' will have particular focus on one of the boys' four main "chums"--Chet Morton, Tony Prito, Phil Cohen, and Biff Hooper--which usually involves one of them being framed for a crime and needing the boys to [[ClearMyName clear them]], getting kidnapped and needing to be found/rescued, or if they have a friend/family member/love interest who needs help.
110*** In the Digests, the boys also have a fifth "chum", Jamal Hawkins, who doesn't appear as much as the other four, but tends to play a very prominent role in most of the books where he does show up.
111*** Chet, the boys' best friend, gets a lot of focus in almost every original book, but not quite as much in the ''Casefiles'', where he gets "limelight" books like their other friends. "Running on Empty" is a particular example.
112** This also goes for Fenton Hardy, who will frequently work with his sons on a case to help an old friend (and sometimes, said "friend" ends up being the bad guy); has been kidnapped numerous times; and has even been framed a couple of times as well. Another notable ''Casefiles'' example, "Nowhere to Run", sees the boys and Fenton working on ''opposite'' sides of a case.
113** The boys' girlfriends, Callie and Iola, also get several focus books in the Digests, especially the latter. In the ''Casefiles'', where Iola is dead, Callie becomes one of the biggest examples in the series, with several books where she's practically the {{Deuteragonist}} next to the boys, such as "See No Evil", "Hostages of Hate", and "Nightmare in Angel City". Once Vanessa is introduced to the series, she also gets the limelight quite a few times.
114** Aunt Gertrude Hardy gets several, such as in "A Killing in the Market" from the ''Casefiles'', where she briefly gets a LoveInterest who is later murdered, and she's accused of killing him; "Past and Present Danger" from the Digests, where her ChildhoodFriend returns as the VictimOfTheWeek and it's also revealed that she once had a fiance who died; and "Trouble Island" from the ''Adventures'', where the impetus for the plot is that she wins a cooking competition to intern with a famous chef and brings the boys with her.
115** A few other notable ''Casefiles'' examples include:
116*** Laura Hardy in "Danger Zone", wherein she's kidnapped as a hostage against Fenton.
117*** Officer Con Riley in "Flesh and Blood", which gives him a bit more backstory and a very active role in the plot (especially since the bad guy turns out to be someone he knows well).
118*** Police Chief Ezra Collig in "Beyond the Law", which likewise explores his backstory and sees him being [[FrameUp framed for corruption]].
119* DeadpanSnarker: Both of them in every continuity, very much so, but Joe in particular. They've been addressed and referred to as "wise guys" on more than one occasion, by friends, foes, and everyone in between, and have back-sassed the bad guys so many times that you have to wonder how they didn't get themselves shot in the face long ago.
120* DeathByAdaptation:
121** In the original version of "Hunting for Hidden Gold", one of the Coulsen Brothers (two of the four prospectors who mined the titular gold) is dead, while the other one is trying to recover it along with Bart Dawson. In the reprint, both Coulsen Brothers are long dead from a mining accident.
122** In the original version of ''The Short-Wave Mystery'', Jimmy Gordon's EvilUncle Elly Batter is TheDragon while in the reprint, he's a PosthumousCharacter who did assist the villains in the past but double-crossed them and died of natural causes afterward. [[DeCompositeCharacter A new villain has some of his lines and scenes.]]
123* DirtyCop:
124** Across the various series, the boys encounter quite a few crooked law enforcement officers, some of whom just take bribes to look the other way while the bad guys commit their crimes, and other times turning out to be a key part of the gang, sometimes even the BigBad.
125** Three different supporting characters who are current or former cops have had a partner on the force who went corrupt:
126*** Bobby Mock, the BigBad of "Flesh and Blood" who wants revenge on the Hardys for Fenton putting his father in prison many years ago, turns out to be Con Riley's partner on the Bayport Police Force, Officer Stewart. For bonus points, Mock's father killed Riley's previous partner many years ago.
127*** "Beyond the Law" delves into Chief Ezra Collig's backstory and reveals that, when he was a rookie officer, he was paired up with one of the best cops on the force, Ray Boseman, whom he greatly admired...until he learned that Boseman was running a racketeering scheme to collect money from local shopkeepers in exchange for protection. Collig reported him, and Boseman could never hold down a police job for long before he turned to crime again, eventually going over to the other side completely and being thrown in prison. He returns in the present to pull a FrameUp on Collig in revenge.
128*** Similarly, in the ''Undercover Brothers'' Super Mystery "Wanted", Fenton reveals to his sons that his best friend and former partner on the police force, Jake Johansen, started stealing valuables and evidence from crime scenes, eventually also taking bribes from crooks to sabotage cases. Despite how much it hurt him, Fenton turned Jake in, who swore revenge as he was being sent to prison. All of this happened when the boys were babies, and in the present day, Jake has his sons impersonate the Hardy Boys to frame them as part of a revenge plot.
129* DistressedDude: Both of them, and also Fenton, Chet, and Sam Radley (another detective who works with Mr. Hardy) on occasion.
130* DivergentCharacterEvolution: As the years went on, Frank became much more bookish, logical, and occasionally downright shy around girls (especially in ''Undercover Brothers'', where he can barely talk to them), while Joe became much more extroverted, temperamental, and a much bigger flirt (especially in the ''Casefiles'', where he has a new GirlOfTheWeek pretty much every book until he meets Vanessa).
131* DoNotGoGentle: One short story has Chief Collig's nephew Tom at first survive being shot in the back and firing after the crooks who shot him.
132* {{Doppelganger}}: In the fourth ''Casefiles'' book, "The Lazarus Plot", the boys are captured, and the bad guys make body doubles. They play SpotTheImposter. Joe meets his "dead" girlfriend Iola, and asks questions, in standard trope fashion, "only she would know the answer to", and she gets them right. It turns out Iola kept an "extremely detailed" diary, and he had quizzed a double who had the information from it programmed into her.
133* EagleEyeDetection: Both boys have, on numerous occasions, been able to spot small, hard-to-see, vital clues.
134* EarlyInstallmentWeirdness: Besides the cases of CharacterizationMarchesOn above, there are a few other examples of early weirdness in the series:
135** The narrative of many early books in the original series gave more focus to Frank than to Joe--such as Frank having more dialogue, coming up with plans to save the day or ideas that turned out to be right more often, focusing on his thoughts more, and sometimes having Joe disappear from the narration for long periods while they were split up--thus making Joe come across as more like a sidekick to his brother, possibly due to Frank being older. Later installments changed this (and all future series followed suit) to make them equal partners with roughly the same amount of dialogue, narrative focus, importance, and perspective.
136** Early books also had the boys' adventures throughout the story fall primarily under TheMeddlingKidsAreUseless (see below), but this pretty quickly evolved into them solving cases that had the police stumped and earning a solid reputation of their own as detectives.
137* EcoTerrorist: In the ''Undercover Brothers'' novel "Blown Away", the person behind the attempted bombing of the Billington Resort is a member of the terrorist group Ecology First, which resorts to extreme methods in order to preserve the environment.
138* EmbarrassingNickname:
139** In the Digest Book "Past and Present Danger" an old friend of Aunt Gertrude's who calls her "Spitfire" arrives in town. She doesn't exactly make a good case for the name not applying to her while trying to shut him up as he describes the origins of the nickname.
140** Inverted the ''Undercover Brothers'' series, where Aunt Gertrude goes by "Trudy"; she reveals that she adopted this nickname because her ''full'' name became embarrassing for her after a hurricane called Gertrude destroyed half of Bayport when she was in high school and everyone started calling her "Hurricane Gertrude" as a result. She soon insisted that everyone call her Trudy instead.
141* EnforcedMethodActing: In-universe, an accidental version occurs in the ''Casefiles'' book "The Borgia Dagger". The story ends with the brothers watching a soap opera where two characters who hated each other throughout the book have both been hired as actors in the show and have a very realistic-looking argument.
142* EngineeredHeroics: The bad guy of the first ''Undercover Brothers'' book is a paramedic causing accidents in order to bask in the limelight of treating the victims.
143* EntertaininglyWrong: The brothers suspecting Tom Swift of being behind the abduction of their father for the first quarter of the crossover "Time Bomb". Their reasons for suspecting Tom, whom they don't even know, make sense based on the very limited evidence they have, but it's actually his enemy, the Black Dragon, framing him; once they meet Tom in person, after an initial scuffle, he sets them straight.
144* EvenEvilHasStandards:
145** When the BigBad of "Mystery of the Desert Giants" is captured, he plans on selling out his gang ''and'' framing an innocent man to feign his own innocence. His chief mook is so disgusted that he testifies to make sure the BigBad goes to jail, and mentions how he should never have been involved in the criminal racket in the first place.
146** In quite a few of the books where multiple suspects turn out to be working together to commit the crime, one or more of the bad guys, while perfectly okay with committing whatever lesser crime the group is responsible for (smuggling, theft, embezzling, etc.), will draw the line at murder (especially of kids) and object when their partner(s) plan to kill the Hardy Boys for discovering their plot, often even turning against the rest of the gang as a result.
147** In "The Billion Dollar Ransom", after the plan is foiled and the two kidnappers are captured, their accomplice--one of the doctors operating on the President, and the brother of one of the captured men--has an opportunity to murder the President in revenge, but doesn't do so, instead saving his life during the operation and [[KnowWhenToFoldEm calmly surrendering and confessing upon seeing the authorities waiting outside]], stating that, whatever else he may have done, he's still a doctor and takes his oath of saving lives seriously.
148** Plenty of YouHaveFailedMe moments from the BigBad towards their {{Mook}}s are a result of said mooks being overly violent or destructive, and/or causing too much collateral damage. It's sometimes due to PragmaticVillainy, while other times, the BigBad only wants to hurt or smear a specific target and otherwise keep damage to a minimum, and is disgusted by their underling's excessive methods.
149* {{Evil Counterpart}}s: The Hardy Boys get a few of these in various different series:
150** The ''Casefiles'' have several notable ones:
151*** Frank II and Joe II from "The Lazarus Plot" are a quite literal example, being actual evil clones of the Hardys created by the Assassins and the Lazarus facility. "Dead of Night" later adds to this, with the Assassins creating evil "clones" of Iola, Callie, Vanessa, the Gray Man, and Al Rousasa by performing plastic surgery on some of their agents.
152*** Greg and Mike Rawley from "Blood Relations" are the stepsons of Walter Rawley, a friend of Fenton's, and are shown to have many common interests with the Hardys. This is especially true for Greg, who trains in karate like Frank and also shows attraction to Callie, while Mike is a football star like Joe. They, along with their mother Linda, turn out to be the villains of the book. Linda is likewise this to Laura Hardy; they're both devoted mothers to their two sons, but Laura is good and a loyal wife to Fenton, while Linda is evil and was just using Walter all along.
153*** Peter and Ed Mason from "False Alarm" repeatedly show up Frank (at science) and Joe (at wrestling), respectively, and also make moves on their girlfriends. The Hardys eventually learn that they're the sons of Richard Courtland (an Evil Counterpart of Fenton's), and that they committed the thefts of the book and invoked the rivalry with the Hardys as a way to make their dad proud and live up to the crimes he committed. It's only at the climax that Joe, Frank, and Fenton finally manage to best Ed, Peter, and Courtland.
154** The first [=SuperMystery=] of ''Undercover Brothers'', "Wanted", features Jake Johansen, Fenton Hardy's former best friend and police partner, and his sons Fred and Jim. Fenton notes that he and Jake and their families were once like "matching bookends", until Jake eventually went bad and started stealing, forcing Fenton to turn him in and resulting in Jake being sent to prison. He swore revenge, and raised Fred and Jim to be obsessed with getting revenge on Frank and Joe (whom they don't even know), culminating in the Johansen boys impersonating the Hardys to frame them for robbery and requiring them to [[ClearMyName clear their name]].
155** The graphic novels for ''Undercover Brothers'' feature the Noir sisters, Shira and Nicolina, and their father Papa Noir, as recurring characters. Just as Fenton co-founded the crime-fighting agency ATAC and recruited his sons Joe and Frank its first two agents, Papa Noir founded the evil counterpart organization WARD (Warring Adolescents, Revenge Division), devoted to creating anarchy and chaos through crime, and inducted his daughters as its agents. Fenton and Papa Noir are both shown in the same issue to have PapaWolf traits towards their respective kids, and Shira and Nicolina are quite intelligent and skilled in combat like the Hardys (though the boys always manage to best them in the end). The issue where the sisters are first introduced is even called "The Opposite Numbers".
156* ExternalCombustion: The ''Casefiles'' series opens with Iola killed in a car bomb meant for Frank and Joe.
157* ExtrudedBookProduct: One of the biggest and longest running examples of this trope ever recorded alongside sister series ''Nancy Drew''. Here's a timeline of just how bad it was:
158** 1927-1929: 2-3 books per year.
159** 1930-1978: One book per year.
160** 1979-1980: Published quarterly.
161** 1981-1983: Published bi-monthly.
162** 1984-1987: Back to quarterly (plus monthly for the ''Caseflies'' spin-off when it debuted in 1987).
163** 1988-1997: Back to bi-monthly for the main series; ''Caseflies'' continues monthly, totaling 18 new books per year.
164** 1998-2010: ''Caseflies'' discontinued, main series continues bi-monthly for the remainder of its run; carries over to ''Undercover Brothers''.
165** 2011-2016: ''Undercover Brothers'' reduced to tri-annually; carries over to ''Adventures''.
166** 2017-2021: ''Adventures'' reduced to bi-annually.
167** 2022-Present: ''Adventures'' reduced to just one book per year, bringing things roughly full-circle.
168* EyeScream: in "Witness to Murder", Frank and Joe run afoul of a leader of jewel thieves named Cutter, who Frank notices never takes off his tinted sunglasses, even though Cutter remains mostly indoors. After escaping, Frank turns to his father for a profile on the guy. Fenton's file mentions that Cutter got his alias because he used to be a master safecracker with a large amount of luck. He changed his criminal profession when his luck ran out one day with his acetylene torch...
169* FakeCharity: The ''Undercover Brothers'' book "Pushed" features the Haven, a shelter for homeless teenagers that raises millions of dollars in donations to get the kids into college. As the boys later discover, most of it goes into the pockets of the director of Haven, and two kids who threaten her racket end up dead.
170* FamilyUnfriendlyDeath:
171** The ''Casefiles'' series doesn't hold back in how murders are committed. And since more than half of these books deal with such a crime, there are plenty of them.
172** The ''Undercover Brothers'' series isn't quite as graphic, but considering that most books in the series still contain at least one death, it has some of these too.
173* FatBestFriend: Chet Morton is the best friend of the Hardy Boys, and has been described as fat, plump, chubby, stout, heavy-set, etc. He has a huge appetite, and vacillates between types A, B and C as the plot dictates.
174* FemalesAreMoreInnocent: Zigzagged throughout the series:
175** Played quite straight in the original series, where almost all of the villains are male. At worst, women who are part of the gang of bad guys are accomplices who aren't involved in the gang's most villainous deeds (such as attempted murder), and other times, they are unwitting accomplices.
176** Downplayed in the Digests. There are more female villains there, but they're more likely to be conflicted about what they're doing and make a HighHeelFaceTurn.
177** Largely averted with the ''Casefiles'', ''Undercover Brothers'', and ''Adventures''. There are quite a few more male villains than female (which is TruthInTelevision), but all three series still have plenty of sincerely evil or at least equally culpable villainesses, and in cases of men and women working together, it's about an even split for whether the man or the woman is the more vicious member of their partnership (or if it's equal).
178* FeudingFamilies: The Blackstones and the Rands in "The Hidden Harbor Mystery". Also count as ClashingCousins in the reprint version due to them sharing a great-grandfather.
179* FirstPersonSmartass: Since both Hardy Boys are full-on {{Deadpan Snarker}}s, they unsurprisingly become this in the series that are told in first person, the ''Undercover Brothers'' and ''Adventures'' (especially the former), which give constant insight into their inner thoughts and feelings and are consistently riddled with sass towards the suspects, friends and family on occasion, and each other.
180* {{Flanderization}}: Since the books are written by different ghostwriters, this can happen DependingOnTheWriter:
181** Some of the ''Casefiles'' books play up Joe's impulsiveness, hot temper, and girl-crazy personality while downplaying his good instincts and sharp investigative skills, causing him to pretty much come off as a DumbMuscle JerkJock who gets easily distracted from the case by a pretty face while Frank is the one to make most of the important deductions. This could get especially bad in the crossovers with Nancy Drew; since these books tend to put more focus on Nancy overall, Joe is often reduced primarily to his shallower character traits.
182** ''Undercover Brothers'' gets worse about this later on, and by the time it ends, both boys are barely even recognizable as the same guys from the beginning of the series, let alone from other series.
183*** This time, Frank probably gets it worse, as his nerdiness gets emphasized more and more to the extent that he and Joe practically become polar opposites. At one point, Frank states that his favorite movie from a previous year was a ''documentary about ladybugs''. Probably the most egregious example is that, in "Comic Con Artist" (book #21), both Joe and Frank are shown and stated to be comic book fans and are excited to immerse themselves in a [=ComicCon=] scene, but then in the Deathstalker Trilogy (books #37-39), as a bit of irony for being the "nerdier" brother, Frank acts like comic books are for little kids, states that he stopped reading them a long time ago and now prefers a "higher class" of literature, and scoffs at Joe for still being a fan.
184*** Joe, meanwhile, has his confidence and positive attitude dialed up to the point of sometimes being a braggart, even arrogant, and comes across as a downright ditz in a few books.
185*** Thankfully, the ''Undercover Brothers'' graphic novels series averts this, heavily downplaying or outright ditching both boys' flanderized traits from the written versions (e.g. Frank is occasionally a bit shy around girls but can certainly still talk to them and has a few love interests, Joe's not really a braggart and is about as guile as Frank) and keeps their characters fairly intact throughout.
186* FoodPorn: The series originally included extended, lavish descriptions of meals. Stratemeyer reasoned that since teenage boys have huge appetites, they'd appreciate such detail. Later editions of the earlier volumes saw such passages removed, in accordance with the growing preference of young readers for dialogue and action over description.
187* FrameUp: Happens to the brothers on occasion, and also to the guest characters. A few examples out of many are the Rideaus in the revised text of "The Melted Coins", Slim Davenport in the ''Casefiles'' book "Dead Man in Deadwood", and David Kidwell in the Digest book "The Desert Thieves".
188* FriendOnTheForce: Like any good private eyes, the Hardy Boys have their own in the local Bayport Police Department.
189** The most consistent is Con Riley, whom the boys note they can always count on to take their concerns and suspicions seriously and help as much as he can. He does worry about the danger their investigations get them into, but nonetheless will occasionally give them insider information despite knowing Chief Collig wouldn't like it. The Hardys also frequently call on him when they need someone to run background checks, license plates, or fingerprints, and is consistently a very useful source of into.
190** Chief Collig himself acts as this in the reprints of the original series, most of the Digests, and ''Undercover Brothers'', impressed by the boys' investigative skills and acting as a ReasonableAuthorityFigure. In the ''Casefiles'' where he's much crabbier, and a few of the Digests as well, their relationship is too contentious and vitriolic for him to fully qualify, but he can still be this on his better days and is ultimately looking out for their safety.
191** The ''Adventures'' replaces Chief Collig with Chief Olaf, who plays a pretty similar role. The Hardys don't get along well with him in the earlier books, where their relationship is similar to that with Collig in the ''Casefiles'', but by the later books in the series, it's evolved to become more like how it was with Collig in the Digests instead.
192* {{Gamebooks}}: The "Be a Detective" series, which ran for six books and was a {{Crossover}} with Nancy Drew.
193* GirlOfTheWeek: Happens pretty often in the ''Casefiles'' series, although they usually tend to go for Joe (or one of the other non-Hardy males); the ones who have eyes for Frank have to be let down gently in the end because he's with Callie, of course.
194** The Frank/Callie relationship in the ''Casefiles'' is further enforced by the fact that, interestingly, nearly every single time that Frank ''is'' actually attracted to the other girl and seems like he might have a fling with her, she turns out to be one of the bad guys (minus Nancy Drew, of course). Even some of the girls he ''does'' turn down are bad guys. This sometimes happens to Joe, too, naturally, but not nearly as much, proportionally, as it does to Frank.
195** Chet Morton also gets several across the books, such as Salamaji in "The Search for the Snow Leopard" and Jerri in "Trouble in Warp Space" (both Digests), Alma in "The Borderline Case" and Dawn in "Cold Sweat" from the ''Casefiles'', and Liz in "Martial Law" from ''Undercover Brothers''.
196** Goes in the opposite direction in the ''Undercover Brothers'' series. Frank, who is painfully shy around women and is easily flustered, seems to have every girl he sees fall for him, while Joe, who claims to be a smooth womanizer, can barely get the time of day. He has no clue how Frank does it.
197** The ''Adventures'' series has both boys be about equally popular with girls; usually only one or the other has a love interest in any given book. Even when they are officially dating these girls, they've ''still'' broken up with her for one reason or another by the end of the book or the start of the next one.
198* GovernmentAgencyOfFiction:
199** The Network from the ''Casefiles'', a CIA/Interpol-like spy agency of the "so secret it doesn't officially exist" variety. Fenton has had dealings with them before, and the boys themselves begin working with them in the first book of the series and do so again many times, eventually to the point of being unofficial part-time freelance agents whom the Network sometimes contacts outright to assign them cases, though just as often, they end up getting involved in Network cases completely by accident. Their main contact at the Network is the Gray Man, or "Mr. Gray", who is essentially the second-in-command of the whole agency and acts as a cross between a mentor and handler for them.
200** The ''Casefiles'' also has U.S. Espionage Resources (sometimes abbreviated to U.S.E.R.), which only shows up in a few early books and one of the Tom Swift Ultra Thriller crossovers. They're more publicly known than the Network, and act their rival agency in terms of government funding and prestige. Espionage Resources is generally depicted as being less competent and more corrupt overall than the Network.
201** American Teens Against Crime, or ATAC (pronounced "attack"), in ''Undercover Brothers'' is a government agency co-founded by Fenton Hardy that solely employs teenagers from around the country as their field agents, with the premise that there are some places where kids would blend in much better while investigating undercover than adults would. Frank and Joe were the first two recruits (thus how this series got its name), and are investigating ATAC cases in almost every book; as such, unlike the other series in the franchise, they are not amateur detectives in this one, and instead are official agents. They receive high-tech spy gear related to their cases in most books, and often reference having received extensive training in a wide variety of different subjects.
202* GuileHero: Especially in the ''Casefiles'' books when they almost always have to fend for themselves to outwit their enemies. Frank in particular can be a very efficient [[TheChessmaster chessmaster]], but even Joe can pull a few tricks of his own.
203* HaveAGayOldTime: Done intentionally by the most prolific of the authors, as a way of injecting humor into a job he didn't care for much. See more details [[http://www.10zenmonkeys.com/2007/10/29/how-gay-were-the-hardy-boys/ here]]. ''WesternAnimation/SouthPark'' picked up on it.
204--> ''I'm getting a '''raging''' clue right now.''
205* HeroSecretService: The reason the Hardy Boys get involved with the Network in the first place: the Assassins are targeting Fenton Hardy through his family, and he calls on a small favor from the Network (whom he's had dealings with before) to keep his loved ones safe. However, since the first four books of the ''Casefiles'' all have Frank and Joe contacting or working with the Network in some form, they are essentially inducted as unofficial members of the agency, and thus future installments featuring the Network mostly drop the connection with Fenton in favor of working with the boys directly.
206* HeterosexualLifePartners:
207** Brothers though they may be, Frank and Joe also have this relationship in ALL of their different incarnations. Though their personalities change in the various series, one thing that is constant throughout is that they're a team and are inseparable, doing just about everything together and basically able to read each other's minds. They have their friends, and they have their girlfriends/love interests, but each of them is always the other's number-one priority.
208** They also have this relationship with Chet in pretty much every continuity, too. This is especially true in the original series, where he's involved in almost all of their adventures.
209* HighHeelHurt: In "Trouble in Warp Space", the actress Jerri Bell (who becomes a GirlOfTheWeek for Chet) is introduced asking the director if there's a way to re-write a scene so she doesn't have to run down a hill in heels.
210* HotterAndSexier: The ''Casefiles'' spin-off, which was targeted for older teenage readers than the concurrently-running Digests, are this compared to all the other series in the franchise.
211** Frank's and Callie's relationship gets significantly more focus than in the Digests, portraying a deeper bond and giving them many more moments that show how much they love each other. Though Iola is killed at the start of the first book, various characters reminiscing about her and Joe's relationship also highlights the deep love they shared in a way the Digests don't. The ''Casefiles'' and the Hardys' appearances in the [=SuperMystery=] crossovers with Nancy Drew also reference many occasions of characters sharing makeout sessions (whereas the Digests don't go further than a "quick kiss"), and tends to highlight both brothers' feelings and emotions towards their LoveInterests more. There are also quite a few more instances of other girls or guys hitting on the brothers or their girlfriends and causing relationship drama, while in the Digests, on the very few occasions that someone else shows interest in the boys or their dates, they don't take it very seriously and it doesn't have any real effect on the plot.
212** However, it should be noted that this is still quite {{Downplayed|Trope}} compared to its ''Nancy Drew Files'' counterpart series, where romance is much more strongly emphasized and its own DarkerAndEdgier aspects are conversely downplayed compared to the ''Casefiles''.
213*** Just compare the two trilogy stories from each series: the ''Casefiles'' has "Operation Phoenix" (involving a worldwide smuggling ring and the brothers believing their father to have been murdered) and "Ring of Evil" (in which the boys literally save the world from terrorists), while Nancy's "Summer of Love" and "Passport to Romance" trilogies, though still containing dangerous mysteries for her to solve, have her relationships with handsome studs she meets during her summer travels as their overarching storylines.
214*** It's also reflected in the cover illustrations for both series. The ''Casefiles'' covers depict a frightening and/or action-filled scene that occurs during the book, and while many of these pictures do have one of the Hardys protectively clinging to a beautiful girl (sometimes Callie, sometimes the GirlOfTheWeek--which, it should be noted, also happens many times on Digest covers), it's always in the context of one of these scenes, with the characters looking shocked or scared. Contrast this with the ''Files'', where many of the books do likewise depict an action scene on the front, but plenty of the earliest and latest covers show an illustration of Nancy and the most important male character in the book (frequently Ned, but not always), often with said guy giving her an intense, admiring gaze, which she sometimes returns.
215* HunterTrapper:
216** "Caribou" Caron from "The Viking Symbol Mystery" is a Canadian trapper who stumbled across some viking artifacts out in the woods, was robbed of the money he got selling them to an anthropologist, and teams up with the brothers to go after the thieves.
217** Both Peter (the brothers' host and a friend's uncle) and his rival Willy Ekus in "The Alaskan Adventure".
218* HuntingTheMostDangerousGame: The Hardys and friends get subjected to it a couple of times:
219** In "The Search for the Snow Leopard", the villain is a hunter who smuggles exotic, endangered animals to his private island and allows other hunters to pay a hefty fee to try to hunt the animal of their choice within a set time limit. He abducts the GirlOfTheWeek, Chet's LoveInterest, when she discovers that he stole her snow leopard for this purpose; later captures Frank, Joe, and Chet as well when they show up to rescue her; and releases the four of them into the wild on his island to be hunted and killed by him and his CoDragons.
220** "Deathgame" features a training camp for survival games where TheDragon who runs it, an ex-army major, secretly kidnaps some of the trainees to forcibly recruit them into a counter-terrorism strike force run by a psychopathic colonel (the BigBad). Biff is one such kidnapped "recruit", and when Frank and Joe come searching for him, the major abducts them as well, taking them to the colonel's private island. The Hardys, Biff, and two other teens who likewise refused to join the strike force are then let loose in the jungle to be hunted down by the colonel.
221* {{Hypocrite}}: In the ''Casefiles'' and their crossovers with Nancy Drew, Frank and Joe sometimes show interest in other girls (most notably Frank with Nancy), occasionally even sharing a kiss with them, despite having girlfriends already in Callie and Vanessa. (In fairness to Joe, he ''doesn't'' have a steady girlfriend for the first half of the series, but this continues even after he begins dating Vanessa, although the books at one point try to "justify" it by saying that "going steady" doesn't mean the same thing to Joe that it does to Frank.) However, both boys then tend to act very jealous when another guy makes a move on or seems to be interested in their girlfriends, though they, thankfully, do at least get called out on their behavior if they go too far with it.[[note]]This is probably a case of ProtagonistCenteredMorality, as the same thing sometimes happens in ''The Nancy Drew Files'' as well.[[/note]]
222* IllTakeThatAsACompliment: In "The Caribbean Cruise Caper", when IceQueen Elizabeth learns at the end of the book that she was one of the suspects, she's vaguely flattered to think that she could be considered that adventurous.
223* InMediasRes: A staple of the ''Undercover Brothers'' series (graphic novels included). The first chapter of each book (or, for the second half of the series, of the first book in a StoryArc trilogy) features the Hardy Boys wrapping up a previous case (usually for ATAC, with one or two exceptions) in a climactic ending. The second chapter will then usually start with them returning home, only for ATAC to send them their next case (often in bizarre fashion) almost immediately afterwards, within a few days at most. One does wonder when they get time for school....
224* InconsistentSpelling:
225** In the ''Undercover Brothers'' series (and a few ''Casefiles'' for some reason), Con Riley's last name is changed to be spelled "Reilly".
226** In the one ''Adventures'' book in which he appears, Biff Hooper's real name is now spelled "Alan" instead of "Allen" the way it was before.
227* InspectorJavert: Happens every few books with a stubborn cop. [[TheDreaded “Dead or Alive Sims”]] from the ''Casefiles'' book "Nowhere to Run" is a bounty hunter example, although he does (kind of) apologize at the end.
228* KidDetective[=/=]AmateurSleuth: One of the most famous examples together with their DistaffCounterpart, Nancy Drew.
229* KingOfTheHomeless: Jones in "Edge of Destruction" from the ''Casefiles'' series, who also leads some of his people to serve as TheCavalry at the end.
230* KnockoutGas: The boys are also on the receiving end of knockout gas or chloroform. For example: in "The Yellow Feather Mystery", the BigBad puts the Hardys to sleep with knockout gas and takes them to his ice fort to freeze to death. It would have worked if not for Chet and the VictimOfTheWeek saving them.
231[[/folder]]
232
233[[folder:L-Z]]
234* LawyerFriendlyCameo: In the ColdOpen of the sixth ''Undercover Brothers'' graphic novel, "Mad House", Frank and Joe come to the rescue of a secret agent. His name is never given, but the agent's manner of speech strongly implies he's ''Literature/JamesBond''.
235* LeaningOnTheFourthWall: The series' ComicBookTime, LongRunner, and NotAllowedToGrowUp traits are occasionally poked fun at:
236** "The Castle Conundrum" references how the Hardy Boys have ''always'' remained high schoolers throughout the series' run:
237--->'''Frank''': Just about all the kids we know plan to go to college. So do we. But first, we have to get through high school. Right now, it seems like it will never end.
238** "Trouble in Warp Space", which came out in 2002 (75 years after the series first debuted in 1927), has this great line:
239--->'''Frank''': Sometimes I feel like we've been chasing criminals for 75 years or so.
240* LiveActionAdaptation:
241** ''The Mickey Mouse Club'' adaptation in the 1950s; [[Series/TheHardyBoysNancyDrewMysteries ''The Hardy Boys Nancy Drew Mysteries'']], which ran from 1977-1979, the short-lived ''The Hardy Boys'' in 1995, and the Hulu original ''The Hardy Boys'' in 2020.
242** There have been rumors for a long time about "The Hardy Men," a live-action movie starring Ben Stiller and Tom Cruise as the Hardy Brothers as adults.
243* LongRunningBookSeries: The originals -> Digests went up to 190 volumes (plus specials and crossovers), printed over the course of over 70 years. The ''Casefiles'' also did pretty well, getting 127 volumes (plus crossovers) over 10+ years. The newer series have been shorter, but ''Undercover Brothers'' still got to 39 (plus specials and crossovers), and the ''Adventures'' are at 20 and still counting.
244* LoonyFan: A lot of them show up in the Super Mystery "Stage Fright" and it turns out several were deliberately hired in hopes they'd sabotage the show.
245* LoopholeAbuse: In "Motorcross Madness", Jamal Hawkins, a recurring friend of the brothers, looks like he's out of the race after his bike is stolen and the rules say he can't use a different model of bike than the one he entered with. Motorcycle collector Trent Howard offers to loan him a bike of the same make and model so he can continue, on the condition that, if Jamal wins, then Howard gets the Grand Prize (which isn't Jamal's main reason for entering) for his collection.
246* LoveInterests: It varies for the boys across various series:
247** In the original and Digests series, Frank's is Callie Shaw and Joe's is Iola Morton, their respective girlfriends.
248** In the ''Casefiles'', Callie is still Frank's love interest, and they have a deeper relationship that receives more focus than it did in the Digests. However, since Iola is murdered at the start of the first book, Joe has a string of [[GirlOfTheWeek Girls of the Week]] for the first half of the series, before one such girl, Vanessa Bender, becomes his steady love interest for the second half.
249** Since the ''Undercover Brothers'' and ''Adventures'' series don't feature Callie and Iola/Vanessa as their girlfriends and have both boys perpetually single, the GirlOfTheWeek format primarily applies, but there are some standouts:
250*** In ''Undercover Brothers'', neither boy ever actually gets a girlfriend, but there is one recurring character, Belinda Conrad, who has a major semi-requited crush on Frank throughout the series.[[note]](Semi-requited, as in, Frank is attracted to her, too, but his shyness around girls prevents him from seriously pursuing the matter.)[[/note]]
251*** In addition to occasional crushes, both brothers sometimes even have actual girlfriends in ''Adventures'', but for some reason or another, they either break up during the story, or are no longer together (with no explanation) at the time of the next book.
252** Tends to happen in their crossovers with Nancy Drew:
253*** In the first Supermysteries series (crossing over the ''Files'' and ''Casefiles''), Frank and Nancy share a mutual attraction, but rarely act on it due to their commitments to their respective partners. Joe and Bess have one as well, but how strong it is and how they act on it varies widely between books.
254*** In the second Super Mysteries (crossing over ''Girl Detective'' and ''Undercover Brothers''), Frank definitely has a crush on Nancy, but it's unrequited due to her only having eyes for Ned (though she sometimes does flirt with Frank a little). Joe is also interested in her in the first book, but mostly goes for Bess in subsequent volumes (possibly since he knows Frank likes Nancy), though it never actually goes anywhere.
255*** In their ''Adventures''/''Nancy Drew Diaries'' crossover, Joe still likes Bess, but since Nancy still has Ned, the story opts for a one-sided PairTheSpares by giving Frank a crush on George.
256* LoveInterestTraitor:
257** In many, many books in every series--the Digests, ''Adventures'', and especially the ''Casefiles'' and ''Undercover Brothers''--the [[GirlOfTheWeek new friend of the book]] who catches the eye of and/or shows interest in one of the Hardys or their friends turns out to at least be one of the villains, sometimes even the BigBad. It varies, though, whether the new friend was only ever using the Hardys/friends and never cared for them, or actually started caring about them and regrets what they've done, or even makes a HighHeelFaceTurn, or some mixture.
258** Sometimes, too, the bad guy turns out to be the romantic partner of another character who isn't involved with the plot, and is usually horrified by their actions.
259* MadeOfIron: Both boys (see HardHead), but particularly Joe, who takes more punishment due to him being the more "athletic" one.
260* TheMeddlingKidsAreUseless: Former TropeNamer, due to the fact that in the early books, the Hardy brothers would often find out who did what, but at the same time the police were doing the same. Essentially, the had grand adventures but didn't affect much in the long run. This was later changed.
261* TheMole:
262** Mike Moran in "The Firebird Rocket" went undercover with the bad guys on behalf of the U.S. Government.
263** Plenty of ''Casefiles'' henchmen (particularly if it's a woman who seems to be a DarkActionGirl) turn out to be Network, CIA, or Interpol agents. "Road Pirates" also has Jackson, a sleazy member of the carjacking ring, trying to set up the gang to be caught by his brother-in-law (a state trooper) due to worrying that someone will get killed if they keep it up and apparently suspecting they won't just let him quit.
264* MultipleNarrativeModes: For the series as a whole:
265** The originals and ''Casefiles'' are told in third-person, with the narrative mostly describing the events, actions, and thoughts/feelings of Frank and Joe, but occasionally showing those of other characters as well (especially in the early ''Casefiles'' novels).
266** The ''Undercover Brothers'' and ''Adventures'' are told in first-person, exclusively from the Hardy Boys' point of view, with Frank and Joe alternating first-person chapters.
267*** There are two ''UB'' books that contain the multiple modes within the book: the first Super Mystery ("Wanted") has the prologue and epilogue described in third person (and acting as BookEnds, with quite a bit of IronicEcho between the two), and "The Children of the Lost" has the prologue in third person from the point of view of an escaped kidnap victim. In both books, the main story was told in the usual way.
268* MySisterIsOffLimits:
269** In ''Undercover Brothers'', TheBully Brian Conrad hates pretty much everybody, but especially the Hardy Boys; however, he hates Frank the most of all because Brian's younger sister, Belinda, has a big crush on Frank, even though he's mostly too shy to return her advances.
270** In "The Borderline Case", Chet gets a GirlOfTheWeek, Alma, who has a crush on him, and her overprotective older brother, Aleko, dislikes him for this, though he eventually warms up to him after seeing Chet comfort Alma and make her feel better when they're all captured by the bad guys.
271** Wholeheartedly averted with Chet himself, though, who has no problem at all with his younger sister Iola dating one of his best friends, Joe Hardy, being perfectly supportive of their relationship. Though after Iola is killed at the start of the ''Casefiles'' by a bomb meant for the Hardy Boys, Chet later admits to Joe in a vulnerable moment in "Dead of Night" that he did, deep down, irrationally blame Joe for getting his sister killed for a while, even if he realized this was wrong and doesn't blame him anymore.
272* [[MysteryMagnet Mystery Magnets]]: These guys can't go '''''anywhere''''' without finding a mystery to solve.
273* NameAmnesia: Happens several times to amnesiac characters throughout the books who otherwise retain their personalities for the most part, though they always remember said names by the end of the adventure.
274** This includes Joe himself in "Brother Against Brother", though, of course, the narration continues to refer to him by name. Unlike many other examples, he doesn't choose any kind of fake name for himself, and his traveling companion, Rita, instead just addresses him with HeyYou until he gets his memories back at the end.
275** In "Hits and Misses", one of the [=SuperMysteries=] with Nancy Drew, the sleuths meet a young woman with memory loss who jusst uses "Jane Doe" until they can help her remember her identity. Funny enough, her actual name really ''does'' turn out to be Jane [Orbach].
276** In a book from the second Super Mystery crossover series, "Danger Overseas", they meet a fellow teen who had such a bad FreakOut that she got TraumaInducedAmnesia from it, including her name. She initially chooses to go by "Lily" because she likes the sound of it, but they soon realize that she is Caitlin, a recently-arrested-suspect's missing girlfriend whom they were searching for, and even before she remembers everything else, she does immediately realize they're right and this is indeed her name.
277* NativeGuide: In mysteries that take place outside of Bayport, the brothers (and sometimes their friends) will very often meet a local from the area who shows them around and becomes an HonoraryTrueCompanion with them, such as Mexican fisherman Tico in the revised version of "The Mark on the Door", and Canadian HunterTrapper Pierre "Caribou" Caron in "The Viking Symbol Mystery".
278* NiceJobFixingItVillain:
279** In quite a few books, the boys are at a dead end, don't really have a good place to start, or aren't even sure there ''is'' a mystery at all...but then the bad guys try to hurt or kill them, confirming their suspicions that something shady is afoot and/or giving them something to go on.
280** One particularly notable example: in "Bloodsport" (a ''Casefiles'' story), Frank and Joe are looking into the disappearance of Frank's fencing teammate and rival. They literally have ''nothing'' on their prime suspect, the coach of the OpposingSportsTeam, who was also pegged responsible for the disappearance of other fencers over the years. But then that coach decided to "scout" Frank as well, kidnapping him and taking him to an underground fighting ring. Frank proceeds to rescue his teammate, and between his work from the inside and Joe's search for him, the boys successfully bring down the whole operation. (It should be further noted that the coach ''knew'' of the brothers' detective skills, yet he thought that Frank would be easily swayed by money and fame to keep things under wraps.)
281* NotAllowedToGrowUp: Joe is 17, Frank is 18. However, they're growing up slowly. In the 1920s, 30s, and 40s, Joe was 15 and Frank 16, in the 50s through 70s blue hardbacks, Joe was 16 and Frank was 17. Still, that's nearly a century for 2 years.
282* NotMeThisTime:
283** A heroic variant: in one story, the Hardys get pulled over because the cops received an anonymous tip from the bad guys, who set them up. A quick search of their van reveals counterfeit ATM cards (related to their father's recently solved[[note]]outside of getting the ringleader captured[[/note]] case). The police, knowing the boys wouldn't get themselves involved in the crime, instead ask them to what extent they helped their father solve it. Frank and Joe make it clear that they never even helped Fenton at all.
284** in “The Mystery of the Desert Giant” the brothers ask the captured criminals whether a pair of freight thieves they had a brief run in with earlier were part of their gang and are given a negative answer. [[note]]This is unusual for the original series, where even petty crooks seeming irrelevant to the main plot would usually show up as part of the main villains' gang later on.[[/note]]
285** In the Supermysteries book “Buried in Time”, the brothers think that the culprit from their case killed the victim from Nancy’s case for [[HeKnowsTooMuch stumbling across some incriminating information.]] When they accuse him of this murder, though, it turns out that not only did he not kill the murdered archeologist, but he’d never even ''heard'' of the man until that point (although he says if the professor really did have that information, then it’s a lucky coincidence that someone else did kill him).
286** Standard fare in the second half of the ''Undercover Brothers'' series, which consist of three-book stories that have multiple mysteries involving the same characters. Frank and Joe will catch someone who confesses to some of the activity, but denies being responsible for something else, and are soon proven to be telling the truth by a fresh act of sabotage or threatening message.
287* NotNowKiddo: The Hardys met with this in a lot of the early books. Eventually, Chief Collig and Con Riley figured out they should probably listen to them once in a while...
288* OneSteveLimit: Averted overall; the Hardys, on various cases, will occasionally encounter people who share a name with friends or family members who have more common names such as Phil, Laura, or Tony. In all of these cases, though, the recurring character who shares the name won't appear in the story or, at most, will have a very small role.
289** There have even been rare references to other people who have the name Frank or Joe, although to keep this trope in play, they're never seriously important characters.
290** There are also a few names that get re-used a lot across certain series. For example, the ''Casefiles'' and spinoffs have no less than ''four'' different girls/women named "Gina" across various books, and ''Undercover Brothers'' has at least three different "Justin"s (and, weirdly enough, two of them have [[AlwaysIdenticalTwins an identical twin brother]] who pretends to be him during the story). In the same series, there are also two different "Jenna"s who each acts as a LoveInterest to one of the boys (a LoveInterestTraitor, in Frank's case).
291* OrgyOfEvidence: "Blood Relations" has Joe and Frank approached by Greg and Mike Rawley, who are convinced their mother, Linda, is going to be killed by their stepfather. Given he's Walter Rawley, an old friend of the family's, the brothers are skeptical. They keep it up, finding some evidence after Linda is kidnapped. Eventually, Frank goes missing as well, while Joe works with a detective who's been hunting Walter for a while to rescue Linda. It's then revealed that Linda and her sons were using Frank and Joe to make it look like Walter was the bad guy so they had an excuse for killing him in "self-defense" and get his fortune, and the "detective" is Linda's real husband and Greg and Mike's dad. Frank then reappears and turns the tables, explaining that he was struck mid-way through on how easy and obvious the case was shaping up, since they'd "never had to do so little work" to solve a mystery. He tried "flipping it around" to consider Walter the innocent one and the rest of his family guilty, and realized how much more sense that made.
292* PaintingTheMedium: ''Casefiles'' opens right after Iola is murdered by a car bomb. The confusion the readers feel is mirrored by our heroes, and long-time fans are going to be just as shocked as Joe.
293* ParentsInDistress:
294** Both Fenton and Laura, but more often the former, have been captured many times by the bad guys to use as hostages against the boys.
295** Aunt Gertrude has largely been spared from being taken hostage, but has ended up as a suspect in a case a few times and required the boys to [[ClearMyName clear her name]].
296* PoorCommunicationKills: On occasion. For one example: in the Digest story "Farming Fear", Chet's and Iola's grandparents note at the end that they probably could have put the pieces together and solved the mystery some time ago if they'd been on better terms with their neighbor (given that their antagonistic relationship kept them from comparing notes and realizing they were both being sabotaged by the villain).
297* {{Prospector}}:
298** Bart Dawson and his mining partners (along with a few other old timers still hanging around town) were this in the backstory of both versions of "Hunting for Hidden Gold", digging a fortune in gold out of the ground before an attack by thieves forced Dawson to flee with the gold, causing an injury that gave him amnesia after he hid it, and before he could regroup with the others.
299** Lucky Moeller in "The Alaskan Adventure" is an older man who's spent decades panning the occasional gold nugget out of the Yukon without ever striking it rich. Moeller has given up hopes of getting rich panning gold by the events of the novel, and instead hopes to have his gold panning site serve as a tourist attraction for a theme park arriving in the area, and work as a guide until he earns enough money to retire to Florida.
300* PutOnABus:
301** Some of the Hardys' circle of friends have slowly faded away as time has gone by. Chet is still a regular; Biff Hooper, Tony Prito, and Phil Cohen appear reasonably frequently, though certainly not in every book; but Jerry Gilroy and Perry "Slim" Robinson completely disappear even before the end of the original 58 books, and don't show up even in the Digests.
302** In ''Undercover Brothers'', Chet is the ''only'' male friend of theirs from the original books who still appears; all the others are never name-dropped even once. Callie here as well; she makes one appearance in an earlier book before dropping out. Even Iola, who still shows up occasionally, is no longer Joe's girlfriend; she's simply a friend of both brothers, as is Callie in her sole outing.
303** ''Adventures'' is very similar; Chet regularly shows up (though not always with much of a role in the story), Iola and Biff each get only one appearance in separate books, and Callie, Tony, and Phil never show up at all; instead, the boys have a bunch of RememberTheNewGuy friends who mostly are one-off appearances, with a few exceptions. This also holds true for Con Riley and Ezra Collig; the former never appears, and the latter is replaced with a SuspiciouslySimilarSubstitute, Chief Olaf.
304* {{Recurring Character}}s: While there are some who retain this status across the franchise, other specific series have their own recurring cast:
305** In the original books, in addition to the titular brothers, their family--father Fenton Hardy, mother Laura Hardy, and after the first few editions, aunt Gertrude Hardy--could probably count as part of the main cast, and the same goes for their best friend, Chet Morton. In all subsequent series, though, they don't actually appear in every book and have specific books in the Digests and ''Casefiles'' that give them CharacterFocus and ADayInTheLimelight, relegating them to this. Chet truly becomes this in ''Undercover Brothers'' and ''Adventures'', where he tags along with the boys for just a few of their cases (but not most of them), while Fenton, Laura, and Trudy (as she's known here) are mostly frequently-appearing background characters (with a few exceptions).
306** Bayport Police Chief Ezra Collig and Officer Con Riley, who both serve as [[FriendOnTheForce friends on the force]] to the Hardys in different ways, are this in the originals, Digests, and Casefiles. The boys will usually cross paths with one or both of them if they're working on a local mystery, and for cases taking place elsewhere, will sometimes call Riley to have him look up information for them. They only have a sparce few appearances in ''Undercover Brothers'', but in ''Adventures'', Officer/Chief Olaf, Collig's replacement, is also this.
307** The boys' other good friends from school besides Chet tend to be this, not appearing as often as he does, but still filling out the supporting cast. The most prominent three are Biff Hooper, Phil Cohen, and Tony Prito, all three of whom appear regularly in the originals, Digests, and ''Casefiles'', and also have books in the latter two series that give them ADayInTheLimelight. Same goes for the boys' girlfriends, Callie Shaw and Iola Morton; in the original series, they appear in most books, but usually play a relatively small role as background characters. The Digests and, in Callie's case, ''Casefiles'', give them more to do when they do show up. Iola also has this role in ''Undercover Brothers'', albeit not as Joe's girlfriend.
308*** Earlier books in the original series had two more "chums", Jerry Gilroy and Slim Robinson, who were soon phased out.
309*** The Digests give them another frequently-recurring friend, Jamal Hawkins; they first meet him in "The Hypersonic Secret" when his dad is the VictimOfTheWeek, but Jamal makes regular appearances for the rest of the series afterwards.
310** The most prominent ''Casefiles''-exclusive examples are the Gray Man, a high-level spy working for the secretive Network who acts as the boys' contact for the agency; and, for the second half of the series, Vanessa Bender, Joe's steady girlfriend and SecondLove. The Assassins play with this; as a whole organization, they're the series main recurring villains, but the individual terrorists the boys face off with are largely different in each encounter.
311** ''Undercover Brothers'' does away with most of the supporting cast of the previous series, minus a few previously-mentioned examples. There are, however, a few new characters introduced who fill this role: Vijay Patel, a junior member of ATAC who sometimes serves as MissionControl and the VoiceWithAnInternetConnection for Frank and Joe; and siblings Belinda and Brian Conrad, the former of whom has a major somewhat-mutual crush on Frank, while the latter is TheBully at school.
312** ''Adventures'' likewise cuts out most of the recurring cast from previous series (minus one-off appearances in different books from Iola and Biff), but has a couple of classmates and teachers who make repeated showings. Probably the most notable example is Charlene Vale, a student IntrepidReporter whom Frank has a crush on, eventually manages to ask out, and seems to have some kind of romance with in later books.
313* RecycledInSPACE: The 1969 animated show featured the Hardy Boys...as a hip groovy ''rock band''!
314* RightForTheWrongReasons: In "Breakdown in Axeblade," the brothers suspect Ben Barntree of toxic waste dumping when they find a letter from a surveying company, whom Ben's neighbor and henchman Robbie hired to try to find a source of water for his cattle other than the river flowing from Ben's property. The brothers are quickly told that the river running through Ben's property is used by every rancher in the area, and so it would be impossible to cover up that many cows getting sick. They eventuaally discover that Ben ''is'' dumping toxic waste, just not anywhere near the river. Robbie's attempts to find a different water source are so that he can quit working for Ben without having to worry about Ben messing with his water supply in retaliation.
315* SayingTooMuch: In "The Billion Dollar Ransom", the President's main kidnapper accidentally lets slip the existence of a third, unknown conspirator in addition to himself and his known partner when talking about what he'll do with his split of the money, which Frank recognizes as one third of a billion, not one half.
316* ScoobyDooHoax:
317** Prominent in the original Hardcover series, where the titles give it away ("The Phantom Freighter", "The Ghost of Skeleton Rock"), although some are more subtle about it (for example, "Secret Warning" deals with both the ghost of a pirate ''and'' an ancient curse revolving around a golden Pharaoh's head). Even the ''Casefiles'' managed to squeeze in a seemingly supernatural plot at least once ("Cliffhanger" sees a mountaineering expedition on Yeti's Tower being threatened by the creature from which the mountain got its name).
318** Actually averted in "The Hardy Boys Ghost Stories", which contains non-canon short-stories that are more openly supernatural. Similarly, the ''Undercover Brothers'' book "Haunted"--this series's take on the ghost stories--has seemingly played this straight at the end after uncovering the villains' plans, only for one last genuinely supernatural event to occur (the boys see the ghost of a girl whose death they were investigating).
319* ScrewTheRulesTheyreNotReal: In "Trouble Times Two", Con Riley warns the brothers and their dad that TheMafiya, including the book's villains, don't adhere to anything like the codes of honor that homegrown organized crime gangs often do, because a stay in an American jail is comparatively lenient next to what would happen to them in their home countries.
320* ScrewThisImOuttaHere: Done fairly often by villains, with varying degrees of success or originality.
321** In the reprint of "The Secret of the Old Mill", Peters nervously takes his share of the money and runs shortly after the boys are captured, only to be picked up by the arriving police a little before his partners as a result.
322** In the reprint of "The Shore Road Mysery", most of the thugs try to make a run for it in the climax, but are stopped by the boys through GoodOldFisticuffs.
323** In "The Disappearing Floor", minor henchman Waxie does this not because of the authorities, but out of fear of his boss after he accidentally forgot to raise up the elevator/floor where the title came from, causing his boss a nasty fall and an injured leg. This action makes him one of the only henchmen in the series who doesn't get arrested, given that the police round up the gang shortly afterwards.
324** Sweeper and Green in "The Secret of Skull Mountain" are being kept from quitting by withholding their promised money and blackmail material, respectively. Fed up with this, they decide to leave anyway and crack their employers' safe to steal that money and evidence, but have the poor timing to be doing it at the same time the Hardy Boys are investigating the building.
325** In the ''Casefiles'' book "Tagged for Terror", Ted, a member of the baggage theft ring, goes on the run about halfway through the book as suspicions rise (although he is considerate enough to tell the guy who's being suspected of his crimes that he'll mail a confession once he gets away). The last chapter mentions that he was eventually captured not far from the border.
326** In "Breakdown in Axeblade," the brothers block a road to prevent trucks dumping toxic waste in a national park from leaving before the cops from a neighboring town arrive. One of those cops finds the trucks empty a few minutes later and quips to the BigBad that his drivers have developed a sudden interest in cross-country hiking.
327** A non-villainous version comes from Bart in the ''Casefiles'' book "A Killing in the Market". As the office assistant of a person of interest in the case, he's assigned to serve as a {{Courier}} to the Hardy Boys, but while he's trying to meet them, he aborts the meeting and makes a beeline out of there when he spots a couple of mooks who had beaten him up earlier.
328** Another non-villainous version comes from Nicole in "Bonfire Masquerade". The brothers and Nancy suspect her when they find a map of all of the burned down buildings in her house where she's nowhere to be found (and abruptly stopped bidding on a piece of property connected to a murder). What actually happened was that Nicole had come to suspect that her rival bidder was the arsonist and decided to stop bidding and get out of town before he decided she was a threat.
329* SequelEpisode: A few books in the ''Casefiles'' continuity directly relate to and build off of plots of previous ones:
330** "Thick as Thieves" (#29) serves as one to "The Crowning Terror" (#6); these are the two books featuring ClassyCatBurglar Charity, who drags the boys into another one of her schemes involving a crime ring in the former after originally meeting her running her own gang in the latter.
331** "See No Evil" (#8), "Line of Fire" (#16) and "Beyond the Law" (#55) serve as a loose trilogy centered around the Hardys weeding out corruption in the leadership of Bayport, such as the City Council, the mayor's office, and the police force, with each of the latter two books referencing events from the previous ones.
332** After the rather intense "Operation Phoenix" trilogy[[note]](consisting of #64 "Endangered Species", #65 "No Mercy", and #66 "The Phoenix Equation")[[/note]], in which the Hardy Boys spend much of it believing their father to have died, the first ''Ultra Thriller'', "Time Bomb", directly refers to and builds off of this by having Fenton once again getting captured and separated from the boys and needing them to rescue him.
333** Meanwhile, the second ''Ultra Thriller'', "The Alien Factor", acts as a loose sequel to "The Crowning Terror" and "Hostages of Hate" (#10), the two previous books to feature U.S. Espionage Resources, U.S.E.R. (a rival agency to the Network), referencing having brought down corrupt U.S.E.R. agents with their uncle in the former book and building off the interagency politics and rivalry with the Network in the latter. The Hardys and Tom end up working with the Network to thwart rogue U.S.E.R. agents working with the BigBad.
334** The also-incredibly-intense "Ring of Evil" trilogy[[note]](consisting of #76 "Tagged for Terror", #77 "Survival Run", and #78 "The Pacific Conspiracy")[[/note]] sees the Hardys and the Network foil a massive plot by a gang of Assassins to cause untold destruction and kill millions of people by dropping a bomb into a volcano. Remnants of this group serve as the main antagonists of two later stories:
335*** "Dead of Night" (#80) serves as a very direct sequel to both this trilogy and to "The Lazarus Plot" (#4): the Hardys plan to testify in court against one of the Assassins from this group to make sure he ends up in jail. The Assassins use their cloning tech from the Lazarus plot to engage in psychological warfare against the boys and discredit them as witnesses so their man will go free.
336*** "True Thriller" (#100) is a more indirect sequel, in which another Assassin from the gang, who has escaped from prison, returns and plans to poison the New York City water supply, requiring the Hardy Boys and the Network to stop him.
337* SeriesContinuityError: Possibly. In the ''Undercover Brothers'' book "Operation: Survival", Frank and Joe make a reference to Literature/NancyDrew in a way that indicates either that they know her or that she's a fictional character in this timeline. A year and a half later, the first Super Mystery crossover book, "Terror on Tour" was released, wherein the boys meet Nancy for the first time in the ''Undercover Brothers''/''Girl Detective'' continuity (unlike in previous series where they'd already known each other for years at the time of the first crossover). Since they'd heard of her from stories about her cases, it's ''possible'' that they were referencing her based on what they'd read from the news, but it's a stretch.
338* ShootTheBuilder: "The Secret of the Island Treasure" features the Hardy Boys participating in an expedition to dig up some PirateBooty after finding an old treasure map. They have to dig about thirty feet (and brave some booby traps) to reach the treasure. They also find three skeletons that the group's archeologist speculates belonged to crewmen who helped the pirate captain dig the pit, and then were killed to keep its location a secret.
339* SiblingTeam: One of the most classic and famous examples in literature (and in general).
340* SingleLineOfDescent: In "Night of the Werewolf", legend has it that every seventh generation, a member of the Taber family turns into a werewolf. The Hardys speculate that there must be lots of Tabers besides their client's son who could be the victim of the curse (assuming it's even true). Their client regretfully informs them that the other branches of the family were almost entirely wiped out in UsefulNotes/WorldWarII.
341* SnarkToSnarkCombat: Occurs ''very'' often between the two brothers in ''Undercover Brothers'', and also a lot in the Digests, ''Casefiles'', and ''Adventures''.
342* SniperDuel: There's a brief one between the BigBad and his ForcedIntoEvil accomplice in the ''Casefiles'' book "Survival of the Fittest".
343* SoProudOfYou:
344** The Hardy Boys regularly get this from their aunt, their mother, and especially their father after they solve the case, stop a crime in progress, or help someone.
345** In the ''Casefiles'' book "Wrong Side of the Law", community center martial arts teacher Lisa Tang respectfully bows to Frank after he defeats the BigBad using skills that Lisa taught him. This also counts as a GracefulLoser moment, considering that Lisa is TheDragon (albeit one who the BigBad betrayed when it was time to split the loot) and is about to be arrested as well.
346* SpinOff: There have been several:
347** ''The Hardy Boys Casefiles:'' DarkerAndEdgier and HotterAndSexier series designed to appeal to teen audiences by removing the previous roadblocks of the parent series (NoHuggingNoKissing, NeverSayDie, etc.) Although it played up the violence and played down the romance compared to its DistaffCounterpart ''The Nancy Drew Files.'' Might qualify as a QuietlyPerformingSisterShow since it had a successful run of 12 years (1986-1998) and 127 issues.
348** ''The Hardy Boys are: The Clues Brothers'' and ''The Hardy Boys Secret Files:'' SpinOffBabies series which both involve 8 and 9-year-old versions of Frank and Joe solving mysteries in the vein of missing pet cats.
349** ''Hardy Boys: Undercover Brothers:'' Considered a continuation of the original series by the publisher, it hovers somewhere between the Originals and the ''Casefiles'' in terms of storytelling (less graphic than the ''Casefiles'', but with deaths still occurring about equally as often, and thus much more liberal than the Originals.)
350** Both the ''Casefiles'' and ''Undercover Brothers'' spin-off had their own spin-off, a Crossover series with Nancy Drew. Interestingly, they were both titled ''Nancy Drew-Hardy Boys Supermysteries.'' (Fans tag them '88 and '07 for the sake of avoiding confusion.) Both shared a lot of similar traits, including hinting at Nancy/Frank and Bess/Joe relationships.
351** ''The Hardy Boys Adventures:'' Replaced ''The Hardy Boys: Undercover Brothers'' as the "official" canon (meaning it's not considered a spinoff like the ''Casefiles''), and falls closer to the original/Digest series in terms of the level of violence. (People still try to kill the boys, but actual murders are rare.)
352* SplitHair: In the mystery "The Secret of Pirates' Hill", Joe drops an envelope on the blade of some pirate cutlasses in the museum to test its sharpness. (It's very sharp.)
353* SportsDad:
354** In "Training for Trouble" Olympic trainee Allen Frierson's dad is very invested in his completion. He turns out to be the culprit, attacking competitors to give his son a better chance of winning.
355** In "Motorcross Madness", Elizabeth notes that her father wants her to win the motorcross race even more than she herself does, likely due to his own health problems preventing him from racing in it himself. Somewhat subverted with the reveal that the main reason he wants her to win is because of how he's discovered that the prize is far more valuable than anyone thinks and wants to get his hands on it.
356** In "Bound for Danger", the brothers go undercover on the Bayport High basketball team to investigate hazing incidents, and one major suspect is Jason, the star player of the team. While quite a few other team members and the assistant coach are part of the hazing gang, Jason himself is not; however, his dad turns out to be the ringleader, who started the hazing because he felt that the team wasn't good enough to win the games needed for his son to get a basketball scholarship for college, and was trying to force the weaker team members to become better players through threats, intimidation, and violence. Even worse, he has more than enough money to just pay for Jason to go to college either way, but is still adamant about getting Jason a scholarship simply because he feels his son deserves it.
357* SuddenSequelDeathSyndrome: Iola in the first chapter of the first ''Casefiles'' book (although she remains alive in the concurrently published Digest books).
358* SupremeChef: Across the many different series, Aunt Gertrude/Trudy Hardy is consistently stated to be an excellent chef and baker, with the rest of the Hardys (especially the boys) loving and praising her cooking, to the point that incredibly delicious food that the boys encounter on their adventure is occasionally described as being "almost as good as Aunt Gertrude's". This is actually a plot point in "Trouble Island" of the ''Adventures'', since the plot is kicked off by Aunt Trudy winning a cooking competition that nets her an internship with a famous chef.
359* SurprisinglyRealisticOutcome: The premise of ''Adventures'' runs on this. Pre-series, the boys had faced the threat of legal trouble due to investigating cases without proper credentials. They were able to sidestep this with a deal that amounted to "no more cases, or it's off to reform school." The Hardys being who they are, that promise is quickly and frequently broken, but much drama is derived from the need to maintain PlausibleDeniability during investigations. Though this premise is gradually dropped as the series continues, and they become more open about their investigations and have more of a reputation for them in later books of the series.
360* SwitchingPOV:
361** Since there are ''two'' main characters, Frank and Joe, this is bound to happen. It's especially prominent when the boys are separated, at which point the narrative will usually jump back and forth between them to show what each party is up to until they inevitably meet back up. Occasionally averted when one of them gets kidnapped, though; he will sometimes drop out from the narrative altogether for quite a while, until his brother manages to find him.
362** When the brothers are together, they sort of share the narrative; we might see a few sentences about what Frank is currently thinking, only to then read about Joe's thoughts a couple of paragraphs later.
363** Though Frank and Joe are naturally the usual focus of the narrative as the main characters, we're occasionally treated to the thoughts of other characters as well. In the originals, said other characters were usually the boys' family (Fenton, Laura, Gertrude) or "chums" (Chet and others). However, in the ''Casefiles'' (especially the early ''Casefiles'', where the POV switch happens much more often), we get the POV of all these people and more, including Callie Shaw (pretty frequently), a few of the one-shot characters from the novel, and even the bad guys.
364** The first-person ''Undercover Brothers'' and ''Adventures'' make this switch the norm, although only with Frank and Joe; the brothers alternate chapters, so the POV constantly switches back and forth between the two.
365* TapOnTheHead: Frank & Joe have been knocked out by getting hit in the head so often that, in real life, the two should be vegetables in permanent comas in the hospital. In the books, though, they just wake up with a bad headache or, at worst, a mild concussion. It's lampshaded in "The Number File"; the boys' car gets forced off the road into the ocean, and once they're safe, Joe quips about losing brain cells from hitting the windshield.
366* TeenGenius: Frank, who has a disturbingly deep knowledge of things like investigative technique, criminal profiling, and computer hacking for an eighteen-year-old.
367* ThrowItIn: In-universe, in "Trouble in Warp Space" Chet gets a guest job on a science fiction TV series. When he accidentally punches a HotBlooded actor too hard during a fight scene, the fighting suddenly gets very real and intense with a PreAsskickingOneLiner thrown in, with the excited director saying to keep filming because this is great stuff.
368* TownWithADarkSecret: The Hardys encounter a couple of small towns like this:
369** "Breakdown in Axeblade" has the titular Axeblade, Wyoming, where the brothers are stranded when their van breaks down. Nearly everyone in Axeblade refuses to associate with them at best, with several people trying to drive the boys out of town or even outright attacking them. They eventually learn that the wealthy ranch owner who essentially runs the town has been illegally dumping toxic waste into the nearby national park, and has the entire town police force on his payroll, who pretty much kidnap the boys under the premise of "arresting" them after framing them for a crime, with the intention to secretly murder them. Almost no one in the town is willing to stand up to the rancher because he owns the mortgage on most of their homes and businesses, and even the mechanic who is sympathetic to the Hardys can't really help because his sister is married to one of the mooks. The only citizens who are truly helpful to the boys are the "town kook" and the mother-and-son café owners, whose husband/father was murdered by the rancher years ago [[HeKnowsTooMuch after discovering what they were up to]].
370** "The End of the Trail" gives us Morgan's Quarry, an old, almost-dead mining town on the Appalachian Trail. The Hardy Boys, Chet, Biff, and Phil are forced to take shelter there to seek medical help for Biff after he breaks his leg, and see a couple of thugs spill a bag of cash in front of them. Most of the people they meet afterwards try to prevent them from leaving. It turns out that the richest man in town--whose family has a long history of various illegal businesses over many decades that have dried up--his butler, and the thugs robbed an armored truck with millions of dollars several months before, and the town sheriff is in on the racket as well; the cash the boys saw was from that robbery, and the bad guys are worried they'll tell the authorities about it once they leave Morgan's Quarry. The only people in town who treat them decently are the father-and-daughter shopkeepers, the innkeeper, and the nurse (the latter of whom turns out to actually be working with the criminals, too).
371* UnfortunateItemSwap: A variant. The backstory of the Digest book "In Plane Sight" has an unfortunate ''vehicle'' swap. After a successful robbery, Carl Denny was laying low at an airshow (having hidden his loot in one of several identical planes) when the cops tracked him down. Denny hot-wired a plane, drove it through the display case and took off right there, escaping the police, but belatedly discovered that he'd taken the wrong plane and left his loot behind.
372* UnintentionallyNotoriousCrime: In one tie-in short story, while the murder of a police officer [[MinorCrimeRevealsMajorPlot who'd pulled over a getaway car to give them a speeding ticket]] is serious enough in and of itself, when this dead cop is the police chief's nephew, that guarantees a ''really'' intense manhunt.
373* TheUnReveal: In the reprint of "The Secret Warning", it never is revealed which of the two ships was responsible for the collision that caused the sinking and killed several people. Divers trying to steal the {{MacGuffin}} in the cargo hold try to distract everyone to their motives by stealing the nautical instruments which would prove who caused the collision, and no mention is made of them being recovered.
374* VagueAge:
375** Not the Hardys themselves, but rather in relation to their friends. While numbers have never been explicitly stated, there are still conflicting accounts on what each character's age in relation to Frank and Joe's. (for example, in "Mystery of the Chinese Junk" only Frank and Tony are of legal age to take a boating license, yet in the SpinOffBabies Clues Brothers, Tony's in the same grade as ''Joe''.)
376** Unlike the originals and ''Casefiles'' (where the brothers' ages are stated at the beginning of every book), the ''Undercover Brothers'' and ''Adventures'' series never give the boys an exact age beyond being teens in mid-late high school.
377* VehicularSabotage: Very frequently. In almost every book of the ''Casefiles'', a solid majority of the Digests, and a few of the originals, ''Undercover Brothers'', and ''Adventures'', someone's car, plane, boat, or other vehicle will be tampered with, either to prevent them from being able to chase/follow the crooks, to keep them from competing in an upcoming competition, or as a way to try to kill them and MakeItLookLikeAnAccident.
378** With cars, the most common form of tampering is cutting the brake line so the boys will get into an accident or drive off a cliff, but some other instances have included releasing the car's carbon monoxide inside it to poison them, draining most of their gas, or messing with the steering mechanism or tires.
379** With other vehicles, some notable examples have included emptying most of the gasoline from their boat so they'll be stranded out at sea, and messing with the boat's or plane's navigation system.
380* WHAMEpisode / EstablishingSeriesMoment:
381** The first ''Casefiles'' book opens a few seconds after Iola has been blown up. This establishes that the series is going to be DarkerAndEdgier.
382** The "Ring of "Evil" trilogy from the ''Casefiles'' (consisting of books 76, 77, and 78) is one to a lesser extent: the boys pretty much save the world from the Assassins, who were going to kill millions upon millions of people and reshape the very landscape of the Earth itself by dropping a hydrogen bomb into a volcano. The stakes are high enough that two more later books in the series (#s 80 and 100) act as sequels to deal with the fallout of this plot.
383* [[WhereTheHellIsSpringfield Where The Hell Is Bayport?]]: The most you really get is that it's a coastal town in New England within driving distance of New York City. The earliest series implies New York state, where there's an actual Bayport in real life, however, later materials will say New Jersey and Massachusetts as well.
384* WorkingTheSameCase:
385** Frank and Joe's investigations often end up coinciding with one their father is working on.
386** Most of the Supermysteries, but there are some exceptions like "Shock Waves", "Buried in Time", "Hollywood Horror" and "Spies and Lies", which have separate sets of villains (though, in all of these books, the brothers and Nancy still help each other catch both sets, and consider the possibilities that their cases may be connected at different points in at least two of those stories). No matter how different the two cases seemed to be, they would have their case tied together to Nancy's roughly two-thirds of the way through the book. "Operation: Titanic" is likely the crowner of this, as the Hardys and Nancy keep just barely missing meeting up with each other and there's very little book left when they finally do. There are some examples that don't even bother with the pretense of having two separate cases, wherein Nancy or the Hardys will outright ask for each others' help from the very start or relatively early on in the story. In those cases, one or the other of them will often become sidetracked by something seemingly unrelated, which will inevitably tie into the main case eventually.
387** This continues in the second Supermysteries series. Four of the six books--"Terror on Tour", "Danger Overseas", "Club Dread", and "Bonfire Masquerade"--have Nancy and her friends on vacation in the same place that Frank and Joe are working on an ATAC case, and happening to meet someone or stumble onto something directly tied to their case. One of the other two books, "Gold Medal Murder", does have their two cases turn out to be separate with different perpetrators, but since the two people they're helping are in a relationship with each other, there's a lot of overlap between them and both groups work together to solve both cases. The final book, "Stage Fright", has the Hardys directly calling Nancy in to help them since she's an IdenticalStranger to the woman they're bodyguarding.
388* WorthlessTreasureTwist: In the reprint of "The Secret Warning", a RedHerring subplot involves some local figures diving for some money aboard a sunk Nazi submarine (one of the treasure hunters was the SoleSurvivor of the sub, another man was among the U.S. Navy crew that sunk it) who at first are antagonists of the brothers but then save them from the ''real'' villains of the book. Unfortunately for them, it is then revealed that the money from the submarine is counterfeit.
389* WouldHitAGirl: The boys sometimes encounter female bad guys on their cases, and if said women try to hurt or kill them, they will fight back in order to save themselves. It's downplayed in the ''Casefiles'', where they tend to go easier on villainesses they do have to get physical with than they do in similar situations with men. They hold back less in the later series.
390* YouHaveFailedMe: Several villains can be quite ruthless to henchmen who fail them, especially in the ''Casefiles'' books. "Competitive Edge" has one notable example.
391--> '''BigBad:''' [[spoiler:Mr. Kirov]] has been useful at times, but he failed on a particularly sensitive project.
392--> '''Joe:''' You mean launching a rocket grenade into the archery center?
393--> '''BigBad:''' That is correct. [[spoiler:Mr. Kirov]] has been [[DeadlyEuphemism relieved of his duties]] and will no longer be participating in our activities.
394[[/folder]]

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