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Used in mystery-themed media, where a detective relies on observation of otherwise-unnoticed clues at a crime scene, or discrepancies in witnesses' or suspects' testimony, in order to solve the mystery.

May be related to AwesomenessByAnalysis, but in this case the sleuth does not necessarily have to be of genius-level intellect; he/she just needs to be able to pay keen attention to detail and to be able to sift critical information away from irrelevant or unimportant information. It is usually TaughtByExperience, and subverts YourEyesCanDeceiveYou if the detective knows to look past what is on the surface and seek out the facts, and ''only'' the facts. For this trope, not doing research is not a viable option, or else the investigator will come across as incompetent.

Unlike SherlockScan, the detective will generally refrain from making (or attempting to make) guesses about a person or situation upon seeing them for the first time; nor can he/she afford to make on-the-spot assumptions about the person, as they may turn out to be false. Instead, if observations are made while interviewing a person, questions may (and in some cases, ''should'') be asked, and checks are then made to confirm or refute the claims that are made.

Also, unlike HyperAwareness (which is often used only as a humor-themed gag or for one-time plot purposes), Eagle Eye Detection is much more realistic and is a constant trait of skilled detectives and investigators. If Hyper Awareness ''is'' present in the work in question, it is toned down to a bare minimum, or at the most reduced to realistic levels, so that the viewer (or player in a video game) can learn at the same pace as the fictional protagonist(s).

Once a clue is sighted that may be crucial to solving the case, though, it is not immediately discarded or let go of; the burden then falls on the detective to compare/contrast that clue with other gathered evidence and see how it relates to a suspect's guilt, in order to make their case.

Compare and contrast HyperAwareness. Contrast SherlockScan.

Not related to ''Film/EagleEye'', the 2008 movie.



[[folder: Board Games ]]

* A necessary skill in ''TabletopGame/{{Clue}}''.


[[folder: Comic Books ]]

* This is one of ComicBook/TheQuestion's most well-known traits. Next to his [[ObfuscatingStupidity wild and crazy conspiracy theories]], of course.
* Franchise/{{Batman}} employs this in his investigation of criminals, doing background research and analyzing clues to get information on the case at hand.
* In ''ComicBook/TheFlash'', during the "Death of Iris Allen" story arc, Barry discovered that the supposed murderer, Clive Yorkin, may ''not'' in fact have been responsible for Iris's death, and so he did some crime scene investigating, including examination of security camera footage. Turns out it was [[EvilCounterpart Professor Zoom]] who killed Iris at super-speed while going fast enough to be virtually invisible to recording security cameras and thus frame Yorkin for the deed. (Then it turned out Iris was NotQuiteDead.)
* The ComicBook/MartianManhunter did this often in his human guise as a private investigator, when he wasn't using his powers.


[[folder: Film ]]

* In ''Film/ThePelicanBrief'' ([[TheFilmOfTheBook based on the novel of the same name]]), the titular document was formed due to Darby Shaw's (played by Creator/JuliaRoberts) investigations based on a theory she came up with regarding the assassination of two Supreme Court judges. To form the brief, she researched the dead judges' case records and kept an eye open for any traits the two men may have had in common.
* In ''Film/SleepyHollow'', this is Ichabod Crane's preferred method of solving the mysterious murders in the titular village. He uses revolutionary (for the time period) methods of investigation, including autopsies of dead bodies, and [[HollywoodAtheist scoffs]] at the supernatural explanations the residents come up with (due to his own HarmfulToMinors childhood memories of his SinisterMinister father). [[spoiler:The supernatural explanations turn out to be true, but he is vindicated by applying deductive reasoning to them to produce the human who arranged it.]]
* Used to investigate the Jack the Ripper killings in ''Film/FromHell''.
* ''Film/HotFuzz'': Nicholas Angel uses this to come up with a very wordy but otherwise plausible theory about the [[strike:murders]] accidents taking place in Sandford, centering around (he thinks) a lucrative property deal. [[spoiler:Turns out the murders are for a much more mundane reason - keeping up [[SeriousBusiness Sandford's level of perfection]].]]
* Plays a role in Detective Spooner's murder investigation in ''Film/IRobot''. The murder at first appears to be a suicide; a man throwing himself through a closed window. Spooner notices the security mesh, and finds he's unable to break it by smacking it with a chair(and later it's revealed [[spoiler:he has a prosthetic arm strong enough to punch through ''pre-stressed concrete'']]), meaning an elderly man like the victim would have no hope of doing it, and a robot was likely the culprit. Turns out [[spoiler: it was ''assisted'' suicide - the robot threw him out the window on his request]].
* In ''Film/NationalTreasure'', it becomes an important skill for the protagonists to advance through the plot.


[[folder: Literature ]]

* [[Creator/AgathaChristie Agatha Christie's]] character Literature/HerculePoirot may be the UrExample, or a candidate thereof.
* Plays a role in ''Literature/TheHardyBoys'' and ''Literature/NancyDrew'' mysteries.
* The children's book series ''The Puzzle Club,'' and the animated series based on it, is about a trio of children who solve mysteries this way.
* Several ''Literature/EncyclopediaBrown'' mysteries are solved this way.
* Literature/SherlockHolmes himself did this in many of his early cases. ''A Study in Scarlet,'' for instance, devotes a couple of pages to his careful inspection of the scene of the crime and his picking up on details that didn't catch the attention of the police. Also, the short story ''Silver Blaze'' required that he visit the two separate crime scenes to collect evidence in order to make his case.
* The ''Literature/RetrievalArtist'' series of sci-fi detective novels has Noelle [=DeRicci=], a detective with the Armstrong lunar police force, whose ability at deciphering crime scenes compares favorably with that of any TV CSI. Pity that she's often the OnlySaneWoman on the scene.
* Used by Kyri in ''Literature/PhoenixRising'' to find the first clues on who killed her parents. However, due to inexperience she and her brother draw the wrong conclusions first.
* A non-mystery example: it's noted in the first ''Literature/HarryPotter'' book that Harry, as a Quidditch Seeker, has stronger powers of observation than many other people, and a knack for noticing things that others miss. It helps him during the gauntlet of tests underneath the school which lead to the titular PlotCoupon.


[[folder: Live Action TV ]]

* ''Series/AdamTwelve'': Along with his uncanny ability to focus, one of the strongest traits of Officer Reed. He recalls license plates while carrying on normal conversations with beat partner Malloy, can spot ringers posing as hostages, recalls memos about serial numbers attached to stolen goods ... on the list goes. At the slightest glance of trouble, Reed immediately alerts others and investigates.
* Frequently happens in the ''Franchise/LawAndOrder'' series, especially [[Series/LawAndOrder the first incarnation]].
* ''Series/{{CSI}}'' and its various incarnations, with the detective work taking place mostly in the crime lab.
* Happens in every episode of ''Series/MurderSheWrote'', with each mystery solved by Jessica Fletcher outlining a visual clue that was shown earlier in the episode, and a clip of said visual clue playing back for exposition.
* Featured during the investigative portions of ''Series/TheGoodWife''.
* Takes place in the lawyer drama series ''Close To Home''.
* Shown often in ''Series/TheCloser''.
* ''Series/WithoutATrace'': Investigations in each episode depend on this.
* Used in the 1991 series ''Silk Stalkings'' to investigate upper-class sex-themed crimes.
* ''Series/{{NCIS}}'' had this in its first incarnation, mostly inside the forensics lab or the autopsy room.
* ''Series/{{Psych}}'': Shawn Spencer's eye for detail and photographic memory are so keen they border on a super power. (And indeed, he uses those skills to [[PhonyPsychic pose as a psychic]].)
* Lampshaded when Series/{{Columbo}} is investigating a murder committed by a genius. He mentions how he went through the police academy with all these smart college-educated people, who he didn't think he could keep up with, but does so by paying attention to every detail.
* Dorothy is shown to have this in one episode of ''Series/TheGoldenGirls'', when the four housemates attend a murder mystery weekend event. Dorothy not only solves the mystery in the play being shown, but when Blanche's boss turns up murdered for real, she solves ''that'' too. [[spoiler:The boss is fine. It was all a stunt.]]


[[folder: Video Games ]]

* A necessary tool in the ''VisualNovel/PhoenixWrightAceAttorney'' series.
* The TropeNamer is ''VideoGame/EagleEyeMysteries'', a detective-themed EdutainmentGame series; in particular, the second game had a feature where the glowing boxes that usually denoted witnesses or clues could be turned off, forcing the player to be that much more observant of the scenery in looking for clues. The series itself also required the player to select the best clues that told the facts, proved or disproved witness statements, and generally painted a plausible picture of what happened and why.
* Could be considered an in-universe example in ''VideoGame/LANoire'', where L.A.P.D. Detective Cole Phelps is known within the department for being a better-than-average detective, ostensibly because of this ability.
* Often required of players in {{Hidden Object Game}}s.


[[folder: Web Original ]]

* Online text-based game ''Sleuth'' relies on the player to pay attention to all clues and witness statements using this trope.


[[folder: Western Animation ]]

* Velma of Franchise/ScoobyDoo is well-known for this, in every incarnation of her character.
* During the ''WesternAnimation/JusticeLeagueUnlimited'' episode "Flash and Substance," [[Franchise/TheFlash Wally West]] is seen in his crime scene lab running tests on a bloodstained shoe, which was cleaned off with dish-washing soap. He informs his supervisor that his investigations have revealed that the soap is the same type as the brand that was found in the murder victim's kitchen.
* During the ''WesternAnimation/SupermanTheAnimatedSeries'' episode "The Late Mr. Kent," Clark had to use his investigative reporter skills to collect enough evidence to exonerate an innocent man on death row.
* There's also ''WesternAnimation/BatmanTheAnimatedSeries'' and its tie-in movies. Played especially strongly in ''WesternAnimation/BatmanMaskOfThePhantasm''.
* Used by [[ActionFashionista Rarity]] during an episode of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' [[ClearTheirName to clear Rainbow Dash's name of a alleged crime]]. Justified in that since Rarity is a fashion designer by trade, she's developed an eye for noticing even the smallest details.


[[folder: Real Life ]]

* Crime scene investigators and detectives have to pay attention to every detail of a case, in order to build convincing evidence for/against a suspect. All aspects of the evidence have to make sense and be able to stand up in a court of law. Anyone who has spend enough time in court (as part of their work, that is), will have had enough opportunity to observe trial proceedings and see how different pieces of evidence have to come together to build a case for/against a defendant.
* On the fun side, this plays a role in murder mystery-themed parties.