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- A necessary skill in Clue.
- This is one of The Question's most well-known traits. Next to his wild and crazy conspiracy theories, of course.
- Batman employs this in his investigation of criminals, doing background research and analyzing clues to get information on the case at hand.
- In The Flash, 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 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 Not Quite Dead.)
- The Martian Manhunter did this often in his human guise as a private investigator, when he wasn't using his powers.
- In The Pelican Brief (based on the novel of the same name), the titular document was formed due to Darby Shaw's (played by Julia Roberts) 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 Sleepy Hollow, 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 scoffs at the supernatural explanations the residents come up with (due to his own Harmful to Minors childhood memories of his Sinister Minister father). 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 From Hell.
- Hot Fuzz: Nicholas Angel uses this to come up with a very wordy but otherwise plausible theory about the
murdersaccidents taking place in Sandford, centering around (he thinks) a lucrative property deal. Turns out the murders are for a much more mundane reason - keeping up Sandford's level of perfection.
- Plays a role in Detective Spooner's murder investigation in I, Robot. 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 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 it was assisted suicide - the robot threw him out the window on his request.
- In National Treasure, it becomes an important skill for the protagonists to advance through the plot.
- Agatha Christie's character Hercule Poirot may be the Ur-Example, or a candidate thereof.
- Plays a role in The Hardy Boys and Nancy Drew 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 Encyclopedia Brown mysteries are solved this way.
- Sherlock Holmes 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 Retrieval Artist 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 Only Sane Woman on the scene.
- Used by Kyri in Phoenix Rising 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 Harry Potter 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 Plot Coupon.
Live Action TV
- Frequently happens in the Law & Order series, especially the first incarnation.
- CSI and its various incarnations, with the detective work taking place mostly in the crime lab.
- Happens in every episode of Murder, She Wrote, 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 The Good Wife.
- Takes place in the lawyer drama series Close To Home.
- Shown often in The Closer.
- Without a Trace: Investigations in each episode depend on this.
- Used in the 1991 series Silk Stalkings to investigate upper-class sex-themed crimes.
- NCIS had this in its first incarnation, mostly inside the forensics lab or the autopsy room.
- 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 pose as a psychic.)
- Lampshaded when 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 The Golden Girls, 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. The boss is fine. It was all a stunt.
- A necessary tool in the Phoenix Wright: Ace Attorney series.
- The Trope Namer is Eagle Eye Mysteries, a detective-themed Edutainment Game 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 L.A. Noire, 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 Games.
- Online text-based game Sleuth relies on the player to pay attention to all clues and witness statements using this trope.
- Velma of Scooby-Doo is well-known for this, in every incarnation of her character.
- During the Justice League Unlimited episode "Flash and Substance," 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 Superman: The Animated Series 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 Batman: The Animated Series and its tie-in movies. Played especially strongly in Batman: Mask of the Phantasm.
- Used by Rarity during an episode of My Little Pony: Friendship Is Magic 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.
- 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.