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Literature: Sherlock Holmes
The literary canon of Sherlock Holmes consists of the fifty-six short stories and four novels written by Arthur Conan Doyle. See Franchise.Sherlock Holmes for more information about the character and the various adaptations of Sherlock Holmes.

For tropes found in the novels, visit their work pages. For tropes found in the short stories and general tropes regarding the character, see below.

Novels

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Anthologies

     The Adventures of Sherlock Holmes 

Contains 12 stories published in The Strand between July 1891 and December 1892 with original illustrations by Sidney Paget.
  • "A Scandal in Bohemia"
  • "The Adventure of the Red-Headed League"
  • "A Case of Identity"
  • "The Boscombe Valley Mystery"
  • "The Five Orange Pips"
  • "The Man with the Twisted Lip"
  • "The Adventure of the Blue Carbuncle"
  • "The Adventure of the Speckled Band"
  • "The Adventure of the Engineer's Thumb"
  • "The Adventure of the Noble Bachelor"
  • "The Adventure of the Beryl Coronet"
  • "The Adventure of the Copper Beeches"

     The Memoirs of Sherlock Holmes 

Contains 12 stories published in The Strand as further episodes of the Adventures between December 1892 and November 1893 with original illustrations by Sidney Paget.
  • "Silver Blaze"
  • "The Adventure of the Cardboard Box" (this story is included as part of His Last Bow in American editions of the canon)
  • "The Adventure of the Yellow Face"
  • "The Adventure of the Stockbroker's Clerk"
  • "The Adventure of the Gloria Scott" (Holmes's first case, described to Watson)
  • "The Adventure of the Musgrave Ritual" (another early case, told by Holmes to Watson)
  • "The Adventure of the Reigate Squire"
  • "The Adventure of the Crooked Man"
  • "The Adventure of the Resident Patient"
  • "The Adventure of the Greek Interpreter" (Mycroft appears for the first time)
  • "The Adventure of the Naval Treaty"
  • "The Final Problem" (Watson reports the death of Holmes; Professor Moriarty is introduced)

     The Return of Sherlock Holmes 

Contains 13 stories published in The Strand between October 1903 and January 1905 with original illustrations by Sidney Paget.

  • "The Adventure of the Empty House" (the return of Holmes)
  • "The Adventure of the Norwood Builder"
  • "The Adventure of the Dancing Men"
  • "The Adventure of the Solitary Cyclist"
  • "The Adventure of the Priory School"
  • "The Adventure of Black Peter"
  • "The Adventure of Charles Augustus Milverton"
  • "The Adventure of the Six Napoleons"
  • "The Adventure of the Three Students"
  • "The Adventure of the Golden Pince-Nez"
  • "The Adventure of the Missing Three-Quarter"
  • "The Adventure of the Abbey Grange"
  • "The Adventure of the Second Stain"

     His Last Bow 

Contains seven stories published 1908–1913, 1917.

  • "The Adventure of Wisteria Lodge" (originally published simply as "A Reminiscence of Mr Sherlock Holmes", this story is made up of two parts given separate titles: "The Singular Experience of Mr. John Scott Eccles" and "The Tiger of San Pedro")
  • "The Adventure of the Red Circle"
  • "The Adventure of the Bruce-Partington Plans" (Mycroft appears)
  • "The Adventure of the Dying Detective"
  • "The Disappearance of Lady Frances Carfax"
  • "The Adventure of the Devil's Foot"
  • " His Last Bow"

     The Case-Book of Sherlock Holmes 

Contains 12 stories published 1921–1927.

  • "The Adventure of the Mazarin Stone"
  • "The Problem of Thor Bridge"
  • "The Adventure of the Creeping Man"
  • "The Adventure of the Sussex Vampire"
  • "The Adventure of the Three Garridebs"
  • "The Adventure of the Illustrious Client"
  • "The Adventure of the Three Gables"
  • "The Adventure of the Blanched Soldier" (narrated by Holmes; Watson does not appear)
  • "The Adventure of the Lion's Mane" (narrated by Holmes; Watson does not appear)
  • "The Adventure of the Retired Colourman"
  • "The Adventure of the Veiled Lodger"
  • "The Adventure of Shoscombe Old Place"


Short Stories Contains Examples of:

    A-G 
  • Absence of Evidence:
    • In the story "Silver Blaze", Sherlock Holmes points out the vital non-clue of a dog failing to react to a mysterious visitor... when a guard dog doesn't bark at an intruder it generally means it's someone he doesn't think is an intruder at all. The scene where Holmes points this out serves as the page quote for the trope.
    • The absence of certain valuable deeds is a vital clue in "The Adventure of the Norwood Builder."
  • Actually Not a Vampire: "The Adventure of the Sussex Vampire."
  • Addiction Powered: Subverted. Sherlock uses cocaine to stimulate his mind only when he has no sufficiently interesting cases to work on. The challenge of solving a mystery is intellectual stimulation enough that he doesn't need drugs while he's on the job.
  • Affably Evil: Professor Moriarty.
  • All There Is to Know About "The Crying Game": The solution to "The Five Orange Pips" has become something like this thanks to a century of Eagleland Osmosis. Once the initials on the letter are revealed to be K.K.K., readers can work out the rest by themselves.
    • "The Adventure of the Lion's Mane" is a gift to zoologists: the murderer is a jellyfish, and the injuries of the dead man plus the title leave no room for doubt.
  • Animal Assassin: "The Adventure of the Speckled Band." The titular band turns out to be a deadly swamp adder. Also, as the name indicates, "The Adventure of the Lion's Mane" although the title could also be misleading as to the type of animal.
    • "Lion's Mane" also subverts it in that the animal was not aggressive, and its killings were purely accidental.
  • Animal Motifs: Lestrade is often described as having bulldog or weasel-like features, usually depending on whether he thinks he's beaten Holmes to the punch.
  • Arc Words: "The Second Stain" was mentioned several times before its publication.
  • Aromanticism: Holmes is considered the archetypal aromantic character; as mentioned by Watson in "A Scandal in Bohemia", the famous detective "as a lover...would have placed himself in a false position. He never spoke of the softer passions, save with a gibe and a sneer."
  • As Long as It Sounds Foreign: in "The Adventure of the Empty House", Holmes explains his apparent return from the dead and escape from Moriarty as due to his knowledge of "Baritsu, or the Japanese system of wrestling". No such word exists in Japanese. It is either an accidental misremembering or purposeful misspelling of Bartitsu, a briefly popular style during the turn of that century. Unfortunately, said style was invented several years after 1891 and furthermore relies heavily on the use of the walking stick, boxing, savate and jujitsu (often called "Japanese wrestling" at the time). At that point in the story, Holmes had left his stick propped against a rock.
    • Of course, there was nothing stopping him from fighting Moriarty with the stick and then leaving it behind when he climbed up the Reichenbach Falls.
  • Asshole Victim:
    • The title character of "Charles Augustus Milverton", who is so unsympathetic that Holmes and Watson allow his killer to get away; also seen in "Black Peter" with a victim who was abusive towards his family and an all around nasty piece of work. The rest of the stories provide plenty more examples. This shows up in "The Boscombe Valley Mystery", "The Cardboard Box", "The Crooked Man", "The Resident Patient", and "The Abbey Grange". In "The Abbey Grange" Holmes and Watson convene a kangaroo court essentially to find the murderer not guilty by reason of this trope.
    • Subverted/Exaggerated in "The Norwood Builder". The asshole in this story turned out not be a victim at all, but had merely faked his own death and framed an innocent guy for his murder in order to get revenge on the guys mother.
  • Awesome by Analysis: Holmes lives, breathes and sleeps this trope. Watson has a few examples too.
  • The Bad Guy Wins: In "A Case of Identity", this happens because of Holmes' sexism. He thinks it's better not to tell his client that her disappeared fiancé was actually her step-father in disguise, because (according to Holmes) "there is danger for him who taketh the tiger cub, and danger also for whoso snatches a delusion from a woman". The fact that Windibank had technically committed no crime may have had something to do with it.
  • Badass Bookworm: Holmes is not only a brilliant detective, but also an innovative forensic scientist, good violinist, and a formidable martial artist who is strong enough to bend an iron poker with his bare hands — and unbend it again afterwards, the harder task. In "The Adventure of the Beryl Coronet", he actually mentions that he has exceptional strength in his fingers.
  • Bastard Bastard: James Wilder in "The Priory School".
  • Batman Gambit: Holmes continually employs these on criminals and clients alike to get what he needs. He's even done it to Watson, counting on the good doctor's sincerity and guileless nature to lure a murderer into a trap in "The Adventure of the Dying Detective". However, since Batman is partly based on Sherlock Holmes, this trope isn't really surprising.
  • Berserk Button: Don't compare Holmes to any other detective, even a fictional one. And more heartwarmingly, don't even attempt to do any harm to Watson in front of Holmes. Holmes also appears to really, really despise blackmailers; most of the Asshole Victim characters whose murderers he refused to expose unless he needed to save an innocent were blackmailers, the remainder mostly being abusive drunks.
  • Big "WHAT?!": Also a case of Not So Stoic. In "The Man With the Twisted Lip," Holmes has concluded that a young man has most certainly been killed, and arrives to deliver the bad news to his widow, in his most businesslike and sympathetic fashion. Then he learns that she just received a letter from him. His whole reaction is justified (and priceless).
    Sherlock Holmes sprang out of his chair as if he had been galvanized. "What!" he roared.
  • Bewildering Punishment: Watson thinks one man guilty because he does not profess this at being arrested; Holmes points out that he must have realized that the evidence was against him, and his behavior before the murder had been unfilial.
  • Bittersweet Ending: Quite a few, including The Sign of the Four and "A Scandal in Bohemia".
  • Black Comedy: "The Adventure of the Three Garridebs", as noted by Watson himself in the introduction.
  • Blackmail: Charles Augustus Milverton's fortune was made by purchasing documents, always making sure they were genuine, that jeopardized well-to-do people's reputations and then he squeezed them for every penny he could. If they aren't rich enough to make the payment, he made an example of them to other victims.
    • Also the alleged reason for the King of Bohemia wanting the photograph of himself and Irene Adler: he told Holmes that she would blackmail him with it. Then, in a Twist Ending, we find out that it was rather the other way around.
  • Blindfolded Trip: In both "The Adventure of the Engineer's Thumb" and "The Greek Interpreter", Holmes' client was bundled into a carriage that they could not see out of and driven to an unknown destination.
  • Brain Fever: Used in several Sherlock Holmes stories, including "The Copper Beeches" in which a girl's stepfather pesters her about her inheritance until she gets brain-fever; "The Adventure of the Naval Treaty" in which a man is ill for nine weeks after a treaty is stolen from under his nose; and "The Crooked Man", where the dead man's wife is conveniently rendered insensible after witnessing her husband's sudden death.
  • Breakout Character: Mycroft Holmes and Irene Adler come up more times in adaptations than they ever do in the actual stories: Mycroft only appears in three ("The Adventure of the Greek Interpreter", "The Final Problem" and "The Adventure of the Bruce-Partington Plans") whereas Irene only appears in "A Scandal in Bohemia" and is referenced indirectly in a Continuity Nod in "The Five Orange Pips".
  • Breakout Villain: Professor Moriarty is a classic.
  • Brilliant, but Lazy: Mycroft is not only an Aloof Big Brother to Sherlock, he's an even better detective. Subverted in that, while Mycroft is physically lazy, he's actually an extremely hard-working civil servant whose encyclopedic knowledge frequently decides British national policy. Mycroft could easily have been a detective himself, but as he explains in "The Adventure of the Bruce-Partington Plans" he loathes the idea of doing the legwork needed to actually gather the facts he'd need to make his deductions. Sherlock himself indulges in long periods of lethargy and substance abuse when there's no case to be solved.
    • Some qualification: Mycroft is better at observation and reasoning, but stinks as a detective. His manner of handling the Greek Interpreter case tips off the bad guys big time, who then come back and try to torture the client to death. The point of the story seemed to be that figuring out someone's profession by their left pinky is a cute trick, but it does not a detective make.
    • This might also tie in Sherlock's refusal to learn anything he deems unimportant to his work, like the Earth turning around the Sun or cultural history not related to crime. Meanwhile Mycroft needs to exactly know these little things for his line of work.
      • Holmes himself may sometimes qualify as this, although his "periods of lethargy" as described by Watson often come closer to full-on manic depression than simple laziness.
  • Bunny-Ears Lawyer: Holmes is a fairly messed up genius and in early stories was Book Dumb in an odd way - knowing minute details about criminal history and the topics of his monographs but barely knowing how to read a map and uninformed about a variety of other topics. He actually has a logical (even if said logic does hail from the moon) explanation for this - he considers the mind to be like an attic, possessed of a limited amount of space and therefore useless if you throw just any old shit in there. So interesting-but-functionally-useless facts like "the Earth revolves around the sun" have no place in the mind of a consulting detective, but some of the more eclectic applications of chemistry with little practical day-to-day use may well occupy the forefront of his mind for weeks at a time if he thinks it'll solve a case.
  • Busman's Holiday: "The Adventure of the Reigate Squire" and "The Adventure of the Devil's Foot".
  • Call to Apiculture: Holmes retires to keep bees on the Sussex Downs. In "The Lion's Mane" he writes of "the soothing life of Nature for which [he] had so often yearned", a rather hypocritical statement given Holmes used to describe the countryside as the birthplace of the most horrible crimes.
  • Cane Fu: Holmes is an expert singlestick player.
  • Canon Discontinuity: A minor example. Doyle never seemed to be sure whether Watson's war wound was in his shoulder or in his leg. Played with in the 2010 BBC adaptation; Martin Freeman's Watson was definitely wounded in the shoulder, but developed a psychosomatic limp.
  • Captain Ersatz: August Derleth's Solar Pons.
  • Catch Phrase: "It is simplicity itself." and "You know my methods."
  • Celibate Eccentric Genius: Holmes one of the most famous examples in English-language media.
    • Mycroft as well.
  • Chairman of the Brawl: Watson has his moment in "The Adventure of Charles Augustus Milverton."
  • Chaste Hero or Celibate Hero: Holmes. Just don't tell it to the fanbase.
  • Chekhov's Gunman: There is a literal example in "Charles Augustus Milverton". In the beginning, a passing reference is made to one of the eponymous blackmailer's victims whose marriage had been called off and career destroyed because of the villain. We forget about this person entirely until Holmes and Watson witness that same victim pump Milverton full of lead.
  • The Chessmaster: Moriarty and Sherlock.
  • Christmas Episode: "The Adventure of the Blue Carbuncle".
  • Clear Their Name: Ends up happening in roughly a quarter of the stories.
  • Clothes Make the Legend: Even if the cape and hat were not really in the stories, it's hard to imagine Holmes without them. Oddly, in Der Mann der Sherlock Holmes war one character is assumed by everybody to be Holmes because he smokes a pipe, he wears a flat tweed cap, and his companion carries a violin case.
  • Clueless Mystery: The series predates the fair play convention. As such, you will see that some clues are not announced to the reader at all (e.g. typewriter forensics), or you only receive the act of observation rather than the result of the clue (e.g. tapping something with a stick, but not told the result or what it means). Lampshaded by Holmes in "The Crooked Man".
    Holmes: “The same may be said, my dear fellow, for the effect of some of these little sketches of yours, which is entirely meretricious, depending as it does upon your retaining in your own hands some factors in the problem which are never imparted to the reader.”
  • Combat Medic: Watson literally was this before the start of the series; he encounters home after being invalided home from a tour as an army doctor in Afghanistan. He subsequently acts as both doctor and combat support for Holmes.
  • Combat Pragmatist: An interesting case: Holmes isn't above breaking the law for a good cause, but still averts this trope - the rules of boxing are sacred. Only on one occasion, when dealing with one really nasty scoundrel, does he take out a riding crop and threaten to give him a good thrashing 'round the ears. On the other hand, Watson, who only breaks society's rules in extreme scenarios (which, living with Holmes, has made them not that rare) will just grab a chair or a fire poker and threaten, with complete intent to use it on his opponent.
    • Milverton would also qualify, as he carries a gun around to every negotiation to avoid any physical confrontation.
    • Moriarty is the king of unfair. He doesn't do anything himself, instead dispatching an army of professional killers to pick off his victims in the most sudden, unexpected, and brutal ways. Typically they don't even see it coming. Until, of course, in the final scenes of "The Final Problem" when he's lost everything. He just lunges at Holmes - no weapon, no nothing - with the sole intention of sending Holmes, and probably himself as well, over the Falls.
  • Compromising Memoirs: A note at the start of one of short stories indicates that there are plenty of people who do NOT want Watson to write these stories. Many others live short lives after Holmes helps them. Conveniently letting Watson tell his tales with impunity.
  • Counterfeit Cash: The bad guys in "The Adventure of the Engineer's Thumb" are doing this. The engineer in question is asked to examine their metal press.
  • Cramming The Coffin: In In "The Disappearance of Lady Frances Carfax", the villains are too squeamish to commit murder outright, so they chloroform Lady Frances and hide her in the coffin containing the body of her old nurse, which is due to buried the next day.
  • Curb-Stomp Battle: In "The Adventure of the Solitary Cyclist", the local bully makes the mistake of picking a fight with Holmes while he is gathering information at the pub. Holmes ignores him until the man backhands him. It doesn't end well for the bully.
    Holmes: I emerged as you see me. Mr. Woodley went home in a cart.
  • Curtain Camouflage: In the adventure "Charles Augustus Milverton", Holmes and Watson break into a blackmailer's house and duck under a curtain when they hear Charles coming in.
  • Dangerously Genre Savvy: Holmes himself is a rare heroic example. Moriarty and his right hand man Col. Moran also seem to be the only Sherlock Holmes villains smart enough to try to attack him in Baker Street. It would have probably worked on anyone else, but they were messing with the master.
    • Baron Gruner in "The Adventure of the Illustrious Client" almost manages where Moriarty failed. But then, Holmes himself says he is an enemy of Moriarty's potential and danger.
  • Deadly Gas: The murder weapon in "The Adventure of the Devil's Foot".
  • Deadpan Snarker: In every single incarnation, this has been Holmes' trademark. While there is an element of arrogance or annoyance on his part, that's just how he honestly acts.
  • Descending Ceiling: In "The Adventure of the Engineer's Thumb", said engineer runs afoul of some counterfeiters, and winds up getting trapped inside of their metal press.
  • Detectives Follow Footprints: In fact, Holmes has perfected it to a science and claims to have published several papers on the subject.
  • Dirty Coward: The true criminal in "The Adventure of the Blue Carbuncle" is scared enough of the consequences of his theft that when an innocent man is accused of the crime he's willing to let the man go to prison. Holmes later exploits this by letting the man go, noting that the case against the innocent man will collapse now that the carbuncle has been found and the true thief is too frightened to ever commit a crime again.
  • Distinguished Gentleman's Pipe: Sherlock frequently smokes a pipe.
  • The Dog Bites Back: The killer in "Silver Blaze" turns out to be the horse, spooking when he felt the first prick of an operation intended to lame him slightly.
    • Charles Augustus Milverton was murdered by the last person he ruined.
  • Don't You Dare Pity Me!: In "The Crooked Man", a tortured and crippled soldier avoids his old love for fear of her pity.
  • Downer Ending: Quite a few of these, including "Five Orange Pips", "The Final Problem", "Dancing Men" and The Valley of Fear. The ultimate example has to be "Cardboard Box", in which every single player in the crime is a victim of another player's gainless vindictiveness; Holmes remarks that it's almost enough to make one lose his faith in God.
  • The Dragon: Colonel Sebastian Moran to Moriarty, as well as most of his associates.
  • Dying Clue: In "The Adventure of the Speckled Band", the last words of a woman who died under mysterious circumstances (an apparently nonsensical rant about the titular speckled band) is the first clue revealed in that case.
  • The Edwardian Era: Some of the late mysteries happened in the early 20th century.
  • Engineered Public Confession: Done twice. Once to get a murder confession in "The Adventure of the Dying Detective", once to get the location of a stolen gem in "The Adventure of the Mazarin Stone".
  • Evil Laugh: Wilson Kemp's high-pitched giggle that he punctuates every other sentence with in "The Greek Interpreter" fits the bill.
  • Exit, Pursued by a Bear: "The Speckled Band", "Silver Blaze", "The Lion's Mane"
  • Faking the Dead: "The Man with the Twisted Lip," and Retconned in for The Return of Sherlock Holmes.
  • Females Are More Innocent: This could be the Trope Codifier, as Sherlock Holmes never brought any woman to justice. He would always either allow them to escape or make sure no charges were filed against them. (Though in one case, letting a female culprit escape meant leaving her to the mercies of her dime-store sociopath of a boyfriend.) This courtesy was sometimes extended to men, if they were sufficiently Sympathetic Criminals (or if they had a female accomplice).
  • Femme Fatale: Somewhat true of Irene Adler.
  • Finger in the Mail: "The Adventure of the Cardboard Box" has a pair of ears placed in a box but delivered to the wrong person.
  • Flanderization: Inverted in the sense that the official police detectives were often portrayed as inept bunglers in the early stories, but later cases recognized their own merits and otherwise had them contribute to the case in their own ways. Sadly, many adaptations reverse this process, especially on poor Lestrade.
  • Follow the Leader: Many later detective characters — Hercule Poirot, Nero Wolfe, Inspector Morse, etc. — were influenced by Holmes in one way or another. Of course, Holmes himself was inspired in no small measure by Poe's Dupin. This is even lampshaded by Watson in the first novel, although Holmes dismisses the resemblance with characteristic smugness. There's also a possible Shout-Out in the new movie, where Watson's fiancée mentions that she likes detective novels and lists Poe as one such author.
  • Forehead of Doom: Moriarty has one, and given the contemporary belief in phrenology he mocks Holmes for not measuring up.
  • Forgets to Eat: Holmes occasionally gets so wrapped up in a case that he doesn't bother to stop for food, and in one, he deliberately starves himself for several days in order for a plan to work properly, leading to his occasionally being described as lean.
  • Formerly Fit: In "The Adventure of the Sussex Vampire", Holmes's client Robert Ferguson. According to Ferguson, Watson himself also qualifies.
  • Framing Device: Holmes doing his thing is sometimes this to what basically amounts to a Watson-written drama/romance.
  • Geek Physiques:
    • Holmes is thin as a rake.
    • Mycroft Holmes is the other extreme to his brother, being very fat with hands like flippers.
  • Generic Doomsday Villain: Professor James Moriarty was pretty much created solely to kill off Holmes in "The Final Problem."
  • Genius Bruiser: Holmes, while being a practiced marksman, swordsman and fist-fighter (but also a few other combat sports, such as Singlestick), also does not lack good old brute strength either. On one occasion, a client's relative threatens Holmes and Watson to back off an assignment. To intimidate them, he grabs an iron poker from beside the fireplace, and bends it with his bare hands. After he left, Holmes takes the same poker and bends it back into shape!
  • Genius Slob: Holmes could very well be the Trope Codifier. While always personally well-kept, Holmes's concept of organisation amounted to keeping his tobacco in the toe of his Persian slipper, his cigars in the coal-scuttle, and his unanswered letters jack-knifed to the mantelpiece, all the while conducting foul-smelling chemical experiments in his study, and even using his walls for target practice.
  • Genre Popularizer: Other detectives had come before, but Holmes is arguably responsible for popularizing the detective story in its modern, standalone form.
  • Giggling Villain: The bad guy that has kidnapped and tortured a victim in "The Greek Interpreter" has an unsettling giggling laugh.
  • Gorgeous Period Dress
    • The client from "A Scandal In Bohemia" dresses very ostentatiously.
    • In general, Holmes' meticulous observation of clues in people's clothing gave Conan Doyle justified grounds to describe their clothes in detail.
  • Good Is Not Nice: Holmes isn't a bad guy, but boy he can be an ass. Made particularly clear in most adaptations.
  • Good Old Fisticuffs: "The Adventure of Black Peter", "The Adventure of the Solitary Cyclist", "The Adventure of the Naval Treaty", and "The Final Problem".
  • GPS Evidence: Hey, Holmes wrote that monograph on the many types of tobacco ash for a reason. He put that special sort of attention to detail to use, too; he could tell exactly where mud on someone's shoes came from, and used the info.
  • Gray Eyes: The Holmes brothers and Professor Moriarty. Notably, the eye color is the only physical similarity between Sherlock and Mycroft aside from height.

    H-N 
  • Had to Come to Prison to Be a Crook: Mentioned in "The Blue Carbuncle", when Sherlock decides to release the man who stole the title gem: "This fellow will not go wrong again; he is too terribly frightened. Send him to jail now, and you make him a jail-bird for life."
  • Have a Gay Old Time:
    • Watson ejaculates in a couple of the books. Back then it just meant to interject a comment into a conversation.
    • Watson's friend Percy ejaculates every third paragraph in The Summation of "The Adventure of the Naval Treaty".
    • In "The Second Stain", Lestrade warns one of his officers that he would find himself "in Queer Street." This meant he would be in financial trouble back when it was written, but those unfamiliar with hundred year old British euphemisms might take that comment in a whole different direction.
    • "The Adventure of Shoscombe Old Place" does one better. Watson describes a suspect thusly: "a boxer, an athlete, a plunger on the turf, a lover of fair ladies, and, by all account, so far down Queer Street that he may never find his way back again.” For what it's worth, a "plunger on the turf" was a reckless gambler who preferred to bet on the horses.
    • "Very sorry to knock you up, Watson," said he, "but it's the common lot this morning. Mrs. Hudson has been knocked up, she retorted upon me, and I on you." - The Speckled Band.
    • "She pulled a little handkerchief out of her muff" - A Case Of Identity.
    • "Thank you," said my patient. "but I have felt another man since the doctor bandaged me." - "The Adventure of the Engineer's Thumb". (Of course, he means he feels like another man.)
  • Heterosexual Life-Partners: The ultimate example (although Holmes is probably just asexual.)
  • Higher Understanding Through Drugs: Sherlock Holmes uses cocaine (legal in Victorian London) when he doesn't have a case, because otherwise his mind will burn out like a powerful engine running without a load. Played straight with tobacco: he famously calls one case "quite a three-pipe problem" and stays up all night smoking to solve it.
  • High Heel-Face Turn: In "The Adventure of the Engineer's Thumb" there is a female character involved with the villain who ends up helping the heroes.
  • Hoist by His Own Petard:
    • In "The Adventure of the Speckled Band", Dr. Grimesby Roylott is bitten by the poisonous snake he intended to use to murder his stepdaughter Helen.. Holmes plays an indirect role in Dr. Roylott's death by attacking the snake with his cane and driving it back through the vent, but notes that he's unlikely to feel much remorse over it.
    • In "The Adventure of the Copper Beeches", when Jephro Rucastle is maimed by the starved mastiff he releases to kill his imprisoned daughter. Particularly appropriate, as he was the one who ordered the dog starved and imprisoned the girl.
  • Hyper Awareness: One of the ways Holmes takes after Dupin is his belief in the powers of real observation, and as such, typically nothing gets past him.
  • Idiot Ball: In "The Five Orange Pips", Holmes know that the bad guys have killed John Openshaw's uncle and father, and that Openshaw is their next target. But he still tells Openshaw to go back home, unescorted. Unsurprisingly, the bad guys meet him on the way home and kill him. Holmes must've been carrying the Idiot Ball that day, because there is only one other short story besides this where a person who has sought his help gets killed.
    • Seriously, "The Adventure of the Lion's Mane"? None of the characters who live on the shore can recognize the signs of a jellyfish sting?!
  • Inner Monologue Conversation: Holmes does the Dupin version (deducing someone's inner monologue through observing their body language) once just to prove that he's as good as Dupin, though he describes it as "showy and superficial".
  • Inspector Lestrade: The Trope Namer, if not the Trope Maker.
  • Insufferable Genius: While rarely outwardly rude, Holmes wasn't exactly big on humility.
    • He even says at one point: "I cannot agree with those who rank modesty among the virtues. To the logician all things should be seen exactly as they are, and to underestimate one's self is as much a departure from truth as to exaggerate one's own powers." (from "The Greek Interpreter")
  • Intelligence Equals Isolation
  • Inter-Class Romance: "A Scandal in Bohemia" has the "rich guy, common girl" romance with the Prince of Bohemia and Miss Irene Adler. Used to show how superior the resourceful and clever Miss Adler is to her 'superior':
    "From what I have seen of the lady, she seems, indeed, to be on a very different level to Your Majesty", said Holmes, coldly.
    • Worse, as the story had been written at some time in 1888, the former King of Bohemia (date of death 1875, who enjoyed royal residence, wealth and prestige even as the royal title had been removed from him) was the "imbecile Emperor" Ferdinand of Austria, while the description of the King and the fact he had a female artist as a lover matches Ludwig I of Bavaria, who had a scandalous relationship in the late 1840s. For Victorian Britain readers, the double irony was easier to understand.
  • Intercontinuity Cross Over: And how! The first time was before Holmes became a Public Domain Character with Arsène Lupin. However, Conan Doyle's lawyers complained so Maurice LeBlanc was allowed to use the name Sherlock Holmes only once, but went on to use the character many more times, changing his name to Horlock Sholmes or Herlock Shears (depending on the publisher) Recent English editions usually change it back to the original name, but never in the French editions. Also notable are Holmes' crossovers with detective, scifi and Gothic characters such as Dracula, Doctor Who, Batman both in comic and animated form (in the latter he and Watson suffered through many layers of Flanderization), C. Auguste Dupin, Eugine François Vidocq (Real Life detective), the H.P. Lovecraft mythos, Professor Challenger, The War of the Worlds, Dr. Jekyll and Mr. Hyde, etc. and sometimes pitted against real life Serial Killers like Jack the Ripper or H.H. Holmes. And of course his brief appeareance but tremendous influence in The League of Extraordinary Gentlemen.
  • In the Blood:
    • Holmes states that his amazing deductive skills and genius is hereditary, he and brother both possessing them. He theorized it might have been because they were descended from the famous Vernet line of French painters. Interestingly, Vernet really did have a sister, who did have a few children, one of which would've had to have been a Holmes parent, legitimately or otherwise.
    • Holmes also believes that Moriarty turned out evil because of "hereditary tendencies of the darkest kind" magnified by his incredible natural genius.
  • I Should Write a Book About This: And Holmes berates Watson for doing so.
  • I Will Wait for You: Deliberately invoked in "A Case of Identity".
  • Invincible Hero: Averted, surprisingly. Holmes didn't always win. In "The Five Orange Pips", Holmes freely confesses that he has been beaten four times; three times by men, and once by a woman (which is a Continuity Nod to A Scandal In Bohemia). And this was still early in his career. Presumably, those are just the ones where he knew who outsmarted him. In the Problem of Thor Bridge, Watson mentions his records contain many utter failures. "The Yellow Face" is a whole case about how Holmes nearly screwed the pooch. He ends the case by asking Watson to remind him of this case if it ever seems like he's phoning it in again.
    "Watson", said he, "if it should ever strike you that I am getting a little over-confident in my powers, or giving less pains to a case than it deserves, kindly whisper 'Norbury' in my ear, and I shall be infinitely obliged to you."
  • Insistent Terminology: Private Consulting Detective.
  • Jerk with a Heart of Gold: He keeps it well hidden behind a cold, logical exterior, but Holmes isn't entirely without a heart; it usually expresses itself through his friendship with Watson. "The Adventure of the Three Garridebs" presents a particularly striking example.
  • Karmic Death: Many throughout the stories, but notably the murder of the blackmailer Charles Augustus Milverton. Both Holmes and Watson saw it happen and decided to protect the murderer, who was one of Milverton's victims.
  • The Klan: The bad guys in "The Five Orange Pips." Controversially, Holmes expresses revulsion at them at a time when they were still publicly seen as a respectable organisation.
  • Leave Behind a Pistol
  • Let Off by the Detective: Holmes sometime does this, reasoning that his job is simply to find a solution to a crime. Since he's not technically a member of the police or the courts, he doesn't feel obliged to turn someone over if he thinks their motive was noble.
  • Living Emotional Crutch: Watson to Holmes, according to some interpretations.
  • Locked Room Mystery: "The Speckled Band".
  • London Town: 221B Baker Street did not exist at the time (the house numbers only went up to 100 there). Later 221 would be assigned to the Abbey National Building Society (who had to hire a full-time clerk specifically to deal with Sherlock-related fanmail), which has now vacated that office. 221B is allocated to the museum, located between 237 and 241 Baker Street.
  • Love Martyr: Watson to Holmes, essentially. For every Friendship Moment, there are many more instances of Holmes deliberately making him feel like an idiot or asking him for a favor and then criticizing the way he does it, but Watson is eternally loyal and says that a single sign of affection from Holmes is worth all the grief he puts up with.
  • Maybe Magic, Maybe Mundane: ...or maybe just karma. Either way, the murderers of "The Five Orange Pips" meet a sudden end, shortly after Holmes vows revenge.
  • Magnum Opus Dissonance: Conan Doyle respected Holmes enough to avert dropping a bridge on him in "The Final Problem", feeling the character deserved to go out with a bang. He did, however, resent that the character was so large that nothing he, Doyle, ever wrote would ever be able to crawl out from under Holmes's shadow.
  • Master of Disguise: Holmes often disguised himself for his investigations, and in most instances not even Watson recognized him. Notably, Watson can't see through Holmes's disguise when he first returns to London after pretending to be dead. Watson faints when Holmes takes off his disguise.
    • Irene Adler's claim to fame, canonically, is that she actually noticed Holmes' ploy, saw through his disguise, deduced who he was - and then, just to be sure, disguised herself as a man, sped to his address in time to watch him laughing his way up the steps into 221B Baker Street, still in the disguise he'd just used on her. She then walks past, wishing him good night and using his name. Holmes himself, still drunk on how smart he is, fails to realize he's in disguise and a stranger on the street just called him by name. A fandom was born.
    • Note that Holmes' ability to see through other people's' disguises wasn't always consistent with his usual perceptiveness. Many fans choose to believe that he did see through disguises, every time: he just didn't let on unless it suited his plans to do so.
  • Mistaken for Own Murderer: the Twist Ending of "The Man With the Twisted Lip."
  • Money, Dear Boy: One of the reasons Doyle eventually brought Holmes back was because of the enormous sums of money editors were offering him.
    • It didn't help that even Sir Arthur Conan Doyle's mother complained about Holmes being killed.
    • Also, Holmes' primary motivation for becoming the King of Bohemia's henchman, in 'A Scandal In Bohemia.' God knows there wasn't a shred of honor in it.
  • Moon Logic Puzzle: While readers may be alerted that some piece of evidence is important, the nature of the evidence might not be known until near the end of the story. Of course, this could be dismissed as an Unreliable Narrator who tells the story from their point of view rather than getting the information from Holmes.
  • Muscles Are Meaningless: Not entirely, but Holmes is very thin yet surprisingly strong.
  • My Card: Common due to the Victorian setting.
  • My Greatest Failure: In "The Yellow Face"
  • Mysterious Past: Sherlock Holmes himself. Watson often wondered what set of circumstances could've produced Holmes, and Holmes never gave away anything about his history, larger family (except his brother), or education. We only know he's descended from French artists and British country squires, he went to University for two years, and has a brother, which doesn't even begin to explain all his weirdness. Then again, we actually learn even less about Watson - but then again, Holmes has way more strangeness to account for. Explaining Holmes' mysterious past is a common topic in pastiche and fanfiction.
  • Never Found the Body: "The Final Problem" (both Holmes and Moriarty).
  • Nice Hat: Contrary to what now is popular belief, Holmes did wear a deerstalker. But never in the city, always in the country. In the city he sometimes wore a top hat, when not undercover of course. This is according to the original Sydney Paget illustrations, that Sir Arthur Conan Doyle approved himself (and he usually requested Paget as his artist), so it's canon, or at least more canon that interior illustrations tend to be.
  • Nice Job Fixing It, Villain: In the "Red-Headed League", if John Clay has kept the League running for two more weeks, Jabez Wilson would not have gotten suspicious and gone to Holmes, who in turn would not have able to foil his heist.
  • No Celebrities Were Harmed: In his tongue-in-cheek biography, William S. Baring-Gould suggests that The prince of Bohemia from "A Scandal in Bohemia" was actually Albert Edward, then Prince of Wales. A common theory also names Edward as the title character of "The Illustrious Client".
    • A more certain one: Charles Augustus Milverton is based off of a real life (alleged) blackmailer, Charles Augustus Howell.
  • Noodle Implements:
    • "The Reigate Squire", where thieves broke in a rich landowner's home and made off with "an odd volume of Pope's Homer, two plated candlesticks, an ivory letter-weight, a small oak barometer, and a ball of twine".
    • "The Adventure of the Veiled Lodger" opens with a veiled threat to whomever has been attempting to steal Watson's papers that if the attempts continue, he'll publicise the full details regarding "the politician, the lighthouse and the trained cormorant".
    • Occasional references are made to Noodle Clues from unpublished cases, such as one Holmes solved by winding a dead man's watch, or another solution based on how far some parsley had sunken into the butter on a hot day.
  • Noodle Incident: Several cases are referred to by name, but never explained. For example, "the shocking affair of the Dutch steamship Friesland, which so nearly cost us both our lives", and "the giant rat of Sumatra, a story for which the world is not yet prepared."
    • Gilbert Adair, in the somewhat bizarre finale 'And then there was no one' to his trilogy of murder mystery pastiches, actually gives the full story of 'The Giant Rat of Sumatra'. And it's surprisingly Doyle-like.
  • No Pronunciation Guide: Holmes' name is supposed to be pronounced with an audible l, not "homes" as it often is. Whether this is followed or not seems to be a dialectal thing, related to how people pronounce similar words like "balmy".
  • Not So Stoic: Holmes in "The Three Garridebs", after Watson gets hurt.
    (Holmes speaking) "You're not hurt, Watson? For God's sake, say that you are not hurt!"
    It was worth a wound—it was worth many wounds—to know the depth of loyalty and love which lay behind that cold mask. The clear, hard eyes were dimmed for a moment, and the firm lips were shaking. For the one and only time I caught a glimpse of a great heart as well as of a great brain. All my years of humble but single-minded service culminated in that moment of revelation.
    • There are a few minor examples of Holmes' unshockable demeanour being cracked by a sufficiently out-of-the-blue revelation: "The Adventure if the Noble Bachelor," when Watson reads that the bride went missing; "The Second Stain," when Watson tells him he won't be able to talk to one of his suspects, because he's dead; and "The Man with the Twisted Lip," when the wife of a man thought to be dead announces she's had a letter from him..

    O-T 
  • Obfuscating Insanity: Holmes himself, in "The Adventure of the Dying Detective".
  • Oddball in the Series: Two of the last stories Conan Doyle wrote, "The Adventure of the Blanched Soldier" and "The Adventure of the Lion's Mane", are narrated by Holmes and do not feature Watson at all.
  • Old Friend: After being essentially absent for 6 books, Tobias Gregson treats Holmes like one when they meet up in "The Adventure of the Red Circle".
  • On One Condition: In "The Three Garridebs", a will stipulates that a man with the extremely rare surname Garrideb will inherit a property provided that he can find two other people with the same surname. The property will be split between the three of them. However, just two Garridebs would get nothing. The trope turns out to have been purposefully invoked by the villain, who made the whole thing up for his own purposes.
  • Only a Flesh Wound: Subverted. Doyle (unsurprisingly given that he was a doctor) accurately treats Watson's wound in Afghanistan as highly physically debilitating. Unfortunately, he could rarely remember exactly where the wound was...
    • And then there's the time in "The Three Garridebs" when it was only a flesh wound, giving us a Crowning Moment of Heartwarming when we see Holmes really and truly frightened at the thought of Watson being hurt.
  • Only Friend: Holmes's idiosyncracies and general lack of interest in other humans except as puzzles ensures that Watson is his entire social circle.
  • Opium Den: Watson goes to one in "The Man W Ith the Twisted Lip" to retrieve a friend who has become an opium addict. He there finds Holmes, who is there on a different case.
  • Orgy of Evidence: In "The Adventure of the Norwood Builder", there is already considerable evidence incriminating the suspect in the eyes of the police, but the clincher is a bloody thumbprint of the suspect on the wall. Holmes finds this suspicious, especially as he had carefully searched that hall the day before, and there had been no bloody thumbprint there, making the clue in his eyes proof that it was a setup.
  • Our Vampires Are Different: "The Adventure of the Sussex Vampire" involves a client who thinks his wife has become a vampire after seeing her suck the blood of her newborn son. Holmes dismisses the notion as ridiculous, and soon ferrets out the truth.
  • Overshadowed by Awesome: Watson, who is intelligent and capable in his own right; he just pales in comparison to Holmes.
  • Police Are Useless: In the early stories, the men of Scotland Yard were a collection of incompetent dullards who'd have trouble catching a cold, much less a criminal. In The Sign of the Four Holmes proclaims "I would rather have the help of Toby (a dog) than the entire detective force of London!" Holmes' dim view of the police was actually Truth in Television at the time, such as fouling up the investigation of the Jack the Ripper murders, and as the real-life police took steps to improve their investigative techniques, their depictions in the stories also improved to the point where Inspector Gregson was praised for his courage and Inspector Lestrade was a more thorough investigator who simply lacked Holmes' Hyper Awareness. The police were also generally portrayed as having their own merits and being capable of solving the everyday cases that were beneath Holmes' notice. However, in "The Adventure of Wisteria Lodge", the country detective Baynes is nearly up to Holmes' standard for observation (finding and analyzing the crumpled note in the fireplace) and tactical cleverness (the false arrest). Holmes handsomely congratulates him, saying "You will rise high in your profession."
  • Pre-Mortem One-Liner: In "The Solitary Cyclist", a man in love with Holmes's pretty, young client interrupts the story's villain forcing the girl to marry him.
    Villain: You're too late. She's my wife.
    Admirer: No, she's your widow.
    And then shoots him. Subverted in that the villain survives.
  • Private Detective: One of the first to popularize the genre.
  • Professor Guinea Pig: In "The Adventure of the Devil's Foot", Holmes' working hypothesis is that some unusual ashes he discovers become, when burned, a powerful poison. He tests his hypothesis... by burning the ashes while Holmes and Watson sit down and find out if they get poisoned or not. Holmes does take precautions, but even so appears to underestimate the possible potency of the poison, and only quick action by Watson saves both of their lives.
  • The Profiler: Both Holmes and Watson often fancy themselves to be this, sometimes correct and sometimes not.
  • Psycho Serum: Involved in "The Creeping Man"
  • Public Secret Message: Multiple examples. Conan Doyle seemed to like this one.
    • In "The Adventure of the Red Circle", someone places ads in the London Daily Gazette' "agony column" to send secret messages.
    • "The Adventure of the Bruce-Partington Plans" also features messages in an agony column as a clue, this time in the Daily Telegraph.
    • In "The Adventure of the Dancing Men", a series of dancing stick figures appeared in several locations visible to anyone who passed by. Holmes decides the figures represent letters and decodes the message.
  • Purple Prose: Holmes accuses Watson's writing style of being this.
  • Put on a Bus: Poor Mary throughout most of The Memoirs. Then, in "The Empty House", we're given an indirect indication that the bus crashed.
  • Rail Enthusiast: Watson can recite the rail schedules off the top of his head.
  • Realistic Diction Is Unrealistic: Of the Spontaneous Eloquent Monologue type
  • Recursive Canon: Watson and Holmes are both aware in-universe that Watson is writing and publishing stories about Holmes's career. Holmes disapproves of the sensationalistic tone of Watson's stories.
  • Recycled Script: "The Crooked Man" is essentially a rehash of The Sign of the Four, albeit with a sympathetic suspect and a mongoose's footprint instead of a cannibal's.
  • Retcon: Remember that for seven years after "The Final Problem" was published, Holmes was dead, then the fandom bugged Arthur Conan Doyle enough that he wrote "The Empty House".
    • It is implied that Watson does this all the time to avoid lawsuits.
    • "The Adventure Of The Second Stain" is first mentioned in "The Adventure Of The Naval Treaty". Watson recounts how it involved so many of Britain's highest noble families, and involved Holmes explaining the true solution to the French detective M. Dubuque and the German detective Fritz Von Waldbaum. The version of "The Adventure Of The Second Stain" that is actually published is very different.
  • Ripped from the Headlines: A few stories were based on actual crimes, such as "The Adventure of Charles Augustus Milverton"
  • Rule of Drama: Lampshaded — Holmes mildly disapproves of the way Watson relates the cases so as to prioritise their suspense rather than coolly laying out the logic by which they were solved, but they agree to disagree.
  • Sacrificed Basic Skill for Awesome Training: In the first story, it's revealed that Holmes has no literary knowledge beyond modern crime literature, and when Watson explains the makeup of the solar system to him, he is interested, but immediately comments that he will "do his best to forget it." Why? Because Holmes reasons that there is only so much you can hold in your head, and he needs only what is required for his profession. This was later ignored by Doyle. Despite apparently having nil knowledge of literature, Holmes is able to quote Johann Wolfgang von Goethe in the original and is familiar with Thomas Carlyle. Perhaps Holmes just had one of those "famous quote each day" novelty calendars?
  • Scare 'Em Straight: This trope is Lampshaded by Holmes when he lets James Ryder go in "The Adventure of the Blue Carbuncle". Holmes notes that Ryder is already a nervous wreck after everything he's been through, and that he's too scared to ever commit a crime again. Putting Ryder in jail would only making him a jailbird for life, but letting him go after very nearly being ruined will keep him from ever doing wrong again. In any event, the greater good would be served since Holmes would be able to ensure the man Ryder framed would be found innocent of the crime.
  • Science Marches On:
    • In "The Adventure of the Blue Carbuncle", Sherlock determines that a man is intelligent by his hat size, reasoning that a man with a big head has a large brain, and therefore is smarter than averge. While there is some dispute among modern scientists as to whether there's any correlation brain size and intelligence, any correlation would be subtler and less pronounced than the one Holmes claims.
    • Brain Fever appears in several stories, which is not a real condition.
    • In several stories Holmes attributes things like personality and interests to genetics.
    • The science in "The Creeping Man" is flawed, to say the least (unless you consider the effects of the "potion" to be psychosomatic, and Professor Presbury a highly suggestible lunatic.)
    • The biology in "The Speckled Band" is also flawed. Snakes do not work that way.
  • Scooby-Doo Hoax: Every single time Holmes encounters a "supernatural" phenomenon, he will use his deductive powers and knowledge of esoteric elements to determine not only that it was a hoax, but exactly how it was done. The Hound of the Baskervilles is perhaps one of the most famous examples.
  • Screw the Rules, I'm Doing What's Right: Holmes LOVES this trope. Made particulary clear in "The Disappearance of Lady Frances Carfax" where he convinces someone to wait for the police (which would take 24 hours to get a warrant) before breaking and entering the house of a conman in search of his kidnapped loved one... only for him and Watson to arrive to the conman's house and hold him at gun point while they search for the kidnapped person.
    "Where is your warrant?"
    Holmes half drew a revolver from his pocket. "This will have to serve till a better one comes."
    "Why, you are a common burglar."
    "So you might describe me", said Holmes cheerfully. "My companion is also a dangerous ruffian. And together we are going through your house."
  • Secret Other Family: The expense of maintaining one is the motive in "Silver Blaze".
  • Sentenced to Down Under: This is what happenedd to a character in "The Adventure of the Gloria Scott". However, he and his fellow convicts rebel and seize control of the ship before they reach Australia.
  • Separated by a Common Language: "The Adventure of the Noble Bachelor"
    Lord St. Simon: Lady St. Simon said something about ‘jumping a claim.’ She was accustomed to use slang of the kind. I have no idea what she meant.
    Holmes: American slang is very expressive sometimes.
  • Series Continuity Error:
    • Sometimes Watson's war wound is in his shoulder, and sometimes it's in his leg.
    • In "The Adventure of the Twisted Lip", Mary Watson calls her husband "James".
    • In "The Final Problem", Watson doesn't know who Moriarty is, so Holmes has to explain it to him. However, in "The Valley of Fear", which was written after "The Final Problem" but takes place before it, Holmes already informs him about Moriarty and his terrible deeds, so Watson should've known about him in "The Final Problem",
    • In the "The Adventure of the Naval Treaty", Watson refers to another case he hasn't yet written about, "The Adventure of the Second Stain". He mentions some interesting facts about the case, specifically that the case "implicates so many of the first families in the kingdom that for many years it will be impossible to make it public", and that it involved "Monsieur Dubuque of the Paris police, and Fritz von Waldbaum, the well-known specialist of Dantzig, both of whom had wasted their energies upon what proved to be side-issue". "The Adventure of the Second Stain" was finally published 11 years later, but it turns out that only one "first family" was implicated in the case, and there's no mention of Dubuque or Waldbaum in the story, nor does it seem very likely that anyone in Paris or Dantzig was ever involved in investigating the case.
  • Sharp-Dressed Man: Holmes liked to dress well and, as noted above, in the books would never wear countrywear in the city.
  • Sherlock Scan: The Trope Namer - Sherlock's favorite marketing shtick, a perfect means to impress potential clients as to his skills.
  • Shipper on Deck: ("The Adventure of the Copper Beeches")Watson has brief hopes for his friend and Violet Hunter, an independent-minded governess with a remarkable knack for observation. He's disappointed when Holmes loses all interest in the woman after the case is solved.
  • Shotgun Wedding: A literal one in "The Adventure of the Solitary Cyclist".
  • Shout-Out: Holmes often tosses off a pithy quotation at the end of the early stories. Goethe is a favorite source.
  • Sliding Scale of Continuity: The stories can be read in any order (with a very few notable exceptions like The Final Problem and The Empty House). And after the first few stories, they aren't all set in the order they were written in, anyway. Conan Doyle deliberately wrote them like this so that readers would not quit following the series just because they had missed a story or two.
  • Snakes Are Evil: Holmes compares Moriarty's shifty gaze to that of a snake.
  • Spanner in the Works: "The Adventure of the Naval Treaty" features Joseph Harrison, the brother of Percy Phelps' fiancee stealing an important treaty. He hides it under the floorboards in his bedroom, intending to sell it to the French or Russian Embassies later, but before he can Percy comes home after suffering a nervous breakdown over the treaty's theft. Joseph ends up kicked out of his own room, where Percy goes to rest, and the treaty remains hidden under the floorboards where Joseph can't reach it. This prevents the treaty from being sold long enough for Percy to recover from his fever and enlist the help of Holmes.
  • Spin-Off: Recurring characters Mycroft Holmes, Irene Adler and Lestrade all have their own authorized series of non canonical books, with varying degrees of success.
  • Stealth Insult: See Inter-Class Romance above for what Holmes says when the King of Bohemia expresses regret that Irene Adler was a commoner not at his "level".
    • "The Boscomb Valley Mystery"
    Lestrade: I find it hard enough to tackle facts, Holmes, without flying away after theories and fancies.
    'Holmes: You are right, you do find it very hard to tackle the facts.
  • Strictly Formula: Not the stories themselves, but Watson notes on reading a newspaper article about a divorce that he already knows what it's about: a drunken husband, who pushes his wife one time too many, and a sympathizing landlady. But in this case, he's Wrong Genre Savvy: Holmes was involved in the case because the husband was in the habit of throwing his false teeth at his wife.
  • The Stoner: Cocaine, naturally.
  • Talk About the Weather: Lestrade resorts to this once, where the case is very odd and he's not sure he should tell Holmes.
  • That's What I Would Do: In one of the short stories, Holmes matches his wits against an unusually clever criminal (no, not Moriarty). Afterwards, he tells Watson it was one of his easier cases; normally he has to adjust his deduction of what the criminal would do, since most people are significantly less smart than himself, Holmes. But in this case, what the criminal did is exactly what Holmes himself would have done, making it easier for Holmes to follow him!
  • They Have the Scent
  • Throw the Dog a Bone: Very occasionally, Watson is allowed to figure things out for himself.
  • Title Drop: "The Speckled Band" is spoken in-story as part of a woman's last words.
  • Too Clever by Half: Brunton, the butler from "The Adventure of the Musgrave Ritual".
  • Total Party Kill: The fate of all the honest crew on the Gloria Scott and then a second time shortly afterwards, with the mutineers, as well as the entire ship.
  • Treasure Map: "The Adventure of the Musgrave Ritual". However, given that the map's directions gave the starting point derived from the shadow of one tree when the sun was above a second tree as they were nearly two and a half centuries before the map was used (They would have grown, changing both the angle of the sun and the length of the object casting the shadow - given that they weren't the same kind of tree, they might not have grown at the same rate, further complicating the issue), and the directions were given in the highly inaccurate paces (Holmes has noted that the length of a man's pace is directly related to his height many times, and the idea that Holmes' legs are the same length as the legs of the man who made the map is a bit of a stretch), the fact that they actually found the treasure is rather surprising.
  • Truth In Literature: Doyle himself would go on to investigate, Sherlock Holmes style, the cases of two men who had been wrongly imprisoned and found the evidence to set them free.
    • The examination of a victim's clothes for clues and the use of plaster to make impressions of marks on the ground was first done in the stories and later became real.

    U-Z 
  • Unexpected Inheritance: A major part of The Sign of the Four and "The Adventure of the Solitary Cyclist". A fake one is used in "The Adventure of the Three Garridebs".
  • Unreliable Narrator: Holmes accuses Watson of being one to some extent. The fact that what he most disapproves of is his ramping up the suspense element instead of the logic suggests that Holmes' infuriating habit of making Watson wait until the end of the case to hear the solution (and therefore, his partner's own cluelessness up to that point) are both narrative inventions of Watson's. Holmes also criticises the general portrayal of himself as an infallible supergenius.
    • Considering Watson openly admits to having mixed up narratives in ordinary conversation at a tense moment (e.g. firing a tiger cub at a double-barreled shotgun rather than vice versa), it could be argued that he accuses himself of being one, too.
  • Unspoken Plan Guarantee: Setting up culprits to incriminate themselves, Holmes never lets Watson or the police in on what he's planning. Often, they (and readers) don't even have any idea which culprit he's expecting will show up.
    • Note that "A Scandal in Bohemia", Holmes' most well-known failure to catch a culprit, involves Holmes telling Watson and his client his plan in exact detail, only for it to be foiled.
  • The Uriah Gambit: "The Crooked Man", with the Trope Namer being discussed at the end.
  • Unbuilt Trope: By now, even ardent fans of the series are used to the classic image of Holmes as the genius "superhero detective" who stands up for justice and battles criminals and evil geniuses. The series shows many tropes that are now familiar in the genre.
    • Asshole Victim - Appears in the first work Holmes appears in. In contrast to modern works where murder is considered inexcusable even if the suspect has been harmed in major ways by the victim the murderer that he apprehends turns out to be a wholly sympathetic vigilante who was just trying to avenge his dead wife, but dies at the end anyway. The closest thing that the novel has to actual "villains" are the murder victims themselves.
    • Defective Detective - Holmes eccentricities are portrayed very differently from more modern depictions of the detective. While the modern Defective Detective can credit much of their forensic skills to their eccentricities, they also at times hinder the detective.
    • Forensic Drama - Holmes simply explains all of his forensic analysis at the end, with the reader seldom privy to intermediate steps.
    • Police Procedural - Sherlock Holmes, a private detective, is seldom described doing the same procedure exactly the same way. He is also wildly inconsistent on whether or not he does detailed interviews of witnesses. The police, who do follow a set procedure, generally don't get the job done.
  • The Unsolved Mystery: In "The Problem of Thor Bridge" Watson mentions at least three cases even Holmes could not solve. He even justifies not publishing them because: "A problem without a solution may interest the student, but can hardly fail to annoy the casual reader."
  • Unwitting Instigator of Doom: The Swiss messenger who lures Watson away in "The Final Problem" was formerly the trope namer.
  • Victorian London: the setting for most of the original mysteries.
  • Villain with Good Publicity: No one could believe Moriarty was a master criminal even when "The Final Problem" was published. According to Watson he only published an account of his dear friend's death because, thanks to Moriarty's brother, people still didn't believe he was guilty. Moriarty was described by an Inspector as being "a very respectable, learned, and talented sort of man" and even went as far as saying that "When he put his hand on my shoulder as we were parting, it was like a father's blessing before you go out into the cold, cruel world." Holmes couldn't help but chuckle at the irony.
  • The Von Trope Family: Von Bork of His Last Bow.
  • The Watson: The Trope Namer.
  • Watsonian Versus Doylist: Another Trope Namer.
  • We All Live in America: Exploited at The aventure of the three Garridebs. Certain words and concepts published in an ad in the newspaper let Holmes deduce it was not published by an english businessman, but an american who assumes those words and concepts apply to England.
  • We Help the Helpless: Holmes sells his services to anyone and everyone, from the poorest pawnbrokers to the wealthiest kings. Helping some of his university classmates with their dilemmas inspired Holmes to do it for a living.
  • What Happened to the Mouse?: The Baker Street Irregulars are called on in the first two novels, and are never seen again. The authorized pastiche The House of Silk endeavors to explain this.
  • "Where Are They Now?" Epilogue: At the end of "The Adventure of the Copper Beaches".
  • White and Gray Morality: In "A Scandal In Bohemia", "The Man with the Twisted Lip", "The Noble Bachelor", and "The Yellow Face", it is revealed that there is no villain, and the apparent victim turns out to be the morally gray character.
  • Whole Episode Flashback: "The Adventure of the Musgrave Ritual" and "The Adventure of the Gloria Scott" . Three out of the four novels also feature this, namely A Study in Scarlet, The Sign of the Four, and The Valley of Fear. This is mostly the reason why The Hound of the Baskervilles became the most filmed Canonical story ever and consequently the most famous.
  • With Friends Like These...: Arguably, Holmes and Watson.
  • Word of Dante: Holmesian fanon (known amongst fans as The Game, since long before the existance of the internet) is varied and has many varied sources from many mediums. The three main sources, however, are William Stuart Baring-Gould's The annotated Sherlock Holmes and Sherlock Holmes of Baker Street, and Leslie Klinger's The New Annotated Sherlock Holmes.
    • Irene Adler is now frequently considered to be Holmes' Love Interest thanks to this trope and Promoted to Love Interest.
    • Similarly, Mycroft Holmes and the Diogenes Club have been expanded by later pastiches (notably The Private Life of Sherlock Holmes) into the Head of the Secret Service and one of its fronts respectively, when in the original canon they're little more than what Doyle presents them as (a Brilliant, but Lazy civil servant and a club for reclusive eccentrics).
  • World War One: The last hurrah of the original canon (stories written by Doyle himself) deal with this and the struggle against German intelligence trying to destroy the Allies.
  • Year Zero: Holmes is revealed to be 60 years old during 1914 which effectively gave him a birth year (1854) and an age (27) during A Study in Scarlet (March 4, 1881).
    • Similarly, Watson's date of graduation from medical school (1878) gives him a birth year of either 1852 or 1853 and an age (probably 28, possibly 29) in A Study In Scarlet, assuming he did not take time off during his education.
  • You Have Waited Long Enough: In "The Adventure Of the Noble Bachelor", a woman vanished immediately after her wedding. Holmes speaks of recognizing it from comparison with past cases, and tracks down the bride and her first husband, whom she had just learned was still alive.
  • You Make Me Sick: Oddly, in Holmes' brief Take That review of Monsieur Lecoq, the 1868 detective novel by Émile Gaboriau: "That book made me positively ill."
  • Your Cheating Heart: Provides the motive for murder in "The Adventure of the Cardboard Box".

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