"Saw it in a movie once. There was this serial killer running around, and the police detective, he puts this big map on the wall and puts pushpins in each of the murders and reckons the killer's writing out a sign of the zodiac. Capricorn or Cancer or sumthin'. Once he figures that out, he's able to track down the killer and stop him from killing the next victim, who just happens to be the cop's girlfriend. Cop shoots the killer just in time, but 'course he ain't dead the first time. He gets up when nobody's looking, even though he's got six bullets in him, and the girlfriend ends up having to shoot him a coupl'a more times." "I think I saw that one."
— Gil's All Fright Diner by A. Lee Martinez
There's a Serial Killer
on the loose! He may or may not be the poetic kind
, but there is one thing we know about him: he picks his locations very carefully. So carefully, in fact, that it's almost inevitable that each death connects with each other death to make the shape of... something. Maybe it's a inverted pentagram
or just a big arrow.
Alternatively, there's no killer, just a lot of weird stuff happening. To find the Weirdness Magnet
, you have to map out where all the weird stuff is and find the exact center.
Anime and Manga
- In Count Cain, the evil organisation Delilah were buying up properties which, when plotted on a map, formed a pentagram in order to use the entire city of London in a resurrection spell.
- Detective Conan has a variation with criminal fires to write the kanji for well... "fire".
- Also in the movie "The Raven Chaser" has connected murder cases with Mahjong tiles placed near the victims. It's later found out the crime scenes mapped out a star constellation.
- Dramatically done in the Fullmetal Alchemist manga- it turns out all of the conflicts that had excessive bloodshed involving the government in the history of Amestris could be connected to form a giant human transmutation circle that spans the whole country.
- In the second episode of Re: Cutey Honey, one of the villains goes on a rampage in the city, trashing buildings in a pattern which forms a kanji message insulting the heroine when viewed from above.
- One theory, which is also presented in the Alan Moore graphic novel From Hell, is that Jack the Ripper's murders were to draw a pentagram on the London map.
- A Justice Society of America arc had the Rival (an evil speedster and arch-enemy of Jay Garrick) run through the United States, killing people in a certain pattern. It spelled out "Edward Clariss," the Rival's real name...and Jay immediately figured out that the last target was Keystone City, and his wife.
- One of the best (though it's not on a map) is in Grant Morrison's Marvel Boy, in which the title character - the hero, mind you - rampages through NYC to spell out a message to humanity. The message? "FUCK YOU."
- Done in one Don Martin Captain Klutz misadventure; the Captain plots Mervin the Mad Bomber's attacks on a map, which form an arrow pointing at the Captain's present location. The pin which marks the tip of the arrow is of course a disguised bomb.
- In the Buffy the Vampire Slayer / Law & Order: Special Victims Unit crossover fic "Not All Monsters Are Demons", Buffy Summers, assisting the police in tracking down a serial killer, figures out that the bodies are aligned in such a way as to point to the next body's dump site, and that the entire thing makes up a gigantic mystic sigil of some sort... but that the killer is getting the details wrong so the "mystic ritual" the man is trying to put into play just isn't going to work.
- Not quite the same, but in Batman Beyond: Return of the Joker, the Joker marks on a map possible targets for his Kill Sat, and NOT coincidentally they form a smiley face.
- Silence of the Lambs has a variant - the pattern is random, but "desperately random," as Lecter put it ? both the killer and his first victim were from the same area; later victims were abducted from random locations in an attempt to hide that fact.
- Film, and thus, Real Life subversion: In Zodiac, despite the best attempts of Paul Avery, David Toschi, Robert Graysmith and everyone else involved, there is never a real perceivable pattern in the Zodiac Killer's killing, and thus, the real killer is never found.
- In Night Watch (the film, not the book) mapping the vampire attack incidents gives a pentagram.
- In Split Second, the monster kills its victims in specific places in order to draw a dot-to-dot version of an astrological symbol on the city map.
- In The January Man, the killer is murdering one woman per month starting in January: when seen on a map, the sites of the eleven murders form the constellation Virgo, and when photographs of the buildings are lined up, the floors on which the murders were committed are the notes on the scale that form the song "Calendar Girl". Yes, really.
- And the dates of the month on which the murders occur are, as the hero realizes when he sees a passing PRIME MEATS truck, prime numbers. As there are 12 that are less than or equal to 31, and 11 of them have been used on the eleven previous months, he's able to tell, which building, which floor, and which day the murder will occur.
- Arachnophobia uses this when Dr. Jennings is figuring out where the spiders' nest is. Naturally, given his crippling fear of spiders, it's his own house.
- Happens in the 2009 Sherlock Holmes movie, due to the villain trying to make it look like he is an Evil Sorcerer and therefore marking out a pentagram, and later a cross, with the murders.
- The above quote comes from one of the Genre Savvy characters in A. Lee Martinez's Gil's All Fright Diner. He does exactly that and finds that the diner itself is the Weirdness Magnet.
- Agatha Christie liked to play with this trope. Often, the murderer is following a pattern to conceal his/her real target.
- The ABC Murders: A serial killer is murdering victims in alphabetical order.
- A Pocket Full of Rye: The killer is following the nursery rhyme.
- Three Act Tragedy
- Judge Dee is unsurprised to discover that two or more of his murder cases are actually linked to the same criminal plot - even when the victims involved seem to have no connection at all.
- In the second Mercy Thompson book the Big Bad is demon-possessed and causes violence by just being nearby. The good guys try to locate him by tracking the outbreaks of violence but no pattern is visible at first. The pattern shows up when they look at day-time incidents only - being a vampire, the villain can't move around to cover his tracks in daylight.
- The organizing principle of Reginald Hill's Dialogues of the Dead. There's just one problem: while Dalziel and Pascoe figure out the connections, they never realize that they've mistaken the killer's identity.
- Jorge Luis Borges's short story "Death and the Compass" is an early subversion. The Amateur Sleuth carefully deduces that a series of three murders (that seem kabbalistically-related) committed at regular intervals in the North, East and West areas of the city, imply that a fourth murder will take place in the South, completing a perfect rhombus that symbolizes the four-letter name of God. He goes to the expected place at the expected time hoping to prevent the murder, only to find out that it was all a Batman-Gambit by a personal enemy of him to lure him to this deserted spot, and kill him.
- Which ironically winds up playing this straight anyway: the pattern itself holds up and ironically even for the exact same reasons as the Amateur Sleuth thinks they do; it's just that the pattern is not the main motivation for the killer.
- In The Haunting of Alaizabel Cray, the location of a series of murders forms the shape of the Chackh'morg — basically an Eldritch Abomination.'
- Averted in Ellery Queen's Cat of Many Tails; while the deaths are plotted on the map, the pattern is irrelevant.
- In Terrier, Beka Cooper maps out the Shadow Snake kidnappings, since she knew her lord did something similar with his big cases, looking for patterns.
- Michael Slade's Ripper, serial killings in Vancouver are arranged to trace a pattern of triangles derived from a Tarot card.
- The "weirdness magnet" version shows up in Good Omens, where Anathema Device is charting ley lines, and discovers said lines are forming a spiral converging on the town of Lower Tadfield.
- Discworld Noir plays this trope straight.
- Strange example: The cover for the US manual of Heavy Rain has the deaths forming the shape of one of the origami figures. This...has absolutely nothing to do with the case at all in-game.
- You and the other main characters try to do this in Persona 4, they end up being utterly unable to prevent anyone from getting thrown into the TV world, and really can only do anything once the next victim has been thrown in (then again, if nobody got thrown into the TV, you would not have to dungeon crawl and there would be no real game, still, you can't help but feel that your party members are idiots)
- Police Quest III goes for the old standard pentagram killings. In defiance of the top quote, the player doesn't figure it out until after his wife stabbed into a coma.
- In World of Warcraft, this can be done by players. Unlike most other things in the game, player corpses do not despawn; they sit there on the ground for up to a week until reclaimed by their owners. This has, naturally, been abused for everything from rude jokes to gold advertising, by leaving elaborate patterns of corpses lying around a major city.
- In Batman: Arkham City, Azrael is the Weirdness Magnet, drawing random-looking patterns in the ground wherever Batman encounters him until they all line up and make a map to where you can find him.
- In one episode of Inspector Gadget, a series of very minor crimes committed by MAD agents, when plotted out on a map of Metro city, spell out MAD. The intent of this plan was for Gadget to figure this out and be waiting for them at the final crime scene, where they had laid a trap for him.
- The Magician: one villain sets fires in the city, Ace goes to the police station and shows that the locations form the letter M - as in Multifire (the name of the villain in question), then the officer arrests Ace, for being "the Magician" (his sign was also a M).
- Parodied (what else) in The Simpsons episode "Homer The Vigilante": the police are investigating a series of robberies (not murders) using the map technique. After the titular family reports theirs and the police add it to the map...
Chief Wiggum: Well...there doesn't seem to be any pattern yet... But I take this one and move it here...[moves a pin]...and I move these over here...[moves more pins] Hello! It almost looks like an arrow!
Lou: Hey, look, Chief! It's pointing right at this police station!
Chief Wiggum: Let's get out of here!
[All the cops flee in terror]
- Referenced in Archer episode Lo Scandolo when Krieger gives the entire ISIS staff each a package containing part of a murder victim. He tells them specific dumpsters, to form a smiley face. Averted however, as they just dump it wherever they feel like.