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A horror and police procedural trope where the police set up a phone trace to catch a criminal but they need them to stay on the line for a certain amount of time. The amount of time will vary, yet somehow the criminal will know the exact amount of time and purposely hang up just before the police can get a trace. If it's a particularly high-tech setup, expect to see a computer generated map showing the tracing process.
Even if the person on the other line is encouraged to keep the other person talking, it never seems to work. The criminal will say everything they want and still always hang up a few seconds shy of the minimum time to trace the number. In some cases, the criminal will say they're aware of the phone trace or say how many seconds the call took. This trope is often used by serial killers or any particularly clever character. A common subversion is to stay on the line just long enough for a trace, but the purpose is to lead the police somewhere else as part of the criminal's elaborate plan.
An essential part of The Calls Are Coming From Inside the House.
As technology marches on, this trope has morphed into tracing the computer connection, but the essence remains the same. Is often a source of Did Not Do the Research, since (unless the work is set in the 1960s or earlier) the phone company can use their computer records tell the cops what numbers called a given phone, and when, even months after the call.
Alternate Reality Games
- In The Lost Experience DJ Dan gets a call that turns out to be from Rachel Blake (using her hacker alias, Persephone). He tells his cohost Tanya to trace the call and she says "Trace it? With my pencil?"
- Bookhunter has a variation where a perp is using a phone line to hack a computer. The cops are able to get the number the hacker is calling from easily enough, but it's a public phone booth, so they must race to physically apprehend the cracker and they don't have any way to keep the perp on the line longer.
- Vanko hangs up before Tony can finish tracing his call in Iron Man 2.
- Seen in Hackers, where the heroes specifically set up the phones to mislead the FBI as to their location. They know it won't last, but they delay as long as they can.
- In Sneakers, the heroes set up this elaborate multi-hub "fence" between their call location and the NSA before calling the government agency in order to negotiate for the MacGuffin. In the space of three minutes the NSA trackers are almost at their door, but they manage to disconnect before they are discovered... or so they think.
- The Federal Marshals tracing Richard Kimble's call in The Fugitive. A subversion because Kimble wanted them to trace the call to the real killer's house.
- Among the better known horror flicks to use the The Calls Are Coming From Inside the House twist, the original Black Christmas features quite a lot of effort on the part of the police force trying to get the lunatic killer who likes obscene phone calls to stay on the line so they can get a trace.
- In Air Force One, when the President calls the White House from a staffer's mobile phone, the White House operator naturally assumes it is a prank call...until the President tells her to trace the call and note it is a staffer's phone.
- In the Mission Impossible movie, Ethan stays on the line just long enough for his call to get traced to London, just as planned. Down to the second, even.
- Used in Goldeneye to figure out where Trevalyen's base is located.
- In The Bourne Supremacy, Jason Bourne speaks to Pamela Landy on the phone, and hangs up before they can trace his location. However, what he says before hanging up makes them realize he's directly in the area.
- Subverted in In the Line of Fire, in that the bad guy stays on the line for quite a long time. The trace goes through, but to the wrong location.
- Hopscotch: "Follett couldn't pinpoint his own backside in broad daylight!" A subversion, in that Kendig wanted the Feds to stop by and destroy his former boss' summer home.
- Set up in Red: Cooper is encouraged by the tracer to keep Frank Moses on the line, prompting Cooper to string out the conversation. Frank was calling from Cooper's house and had made the call specifically to allow a complete trace to reveal that fact to Cooper.
- Three Days of the Condor. The CIA thinks they've traced Turner's whereabouts, but Turner has stolen a phone linesmen's kit and wired fifty phones together.
- Juggernaut. The police are shown racing to where the call from the bomber is coming from, only to find a bunch of public phones wired together.
- Memorably happens at the beginning and end of The Matrix. In the opening, Trinity stays on the line too long and is chased by Agents for her troubles. At the end, the trace program freezes midway through its run as Neo exerts his powers over the Matrix.
- In one episode of Murdoch Mysteries, Constable Crabtree invents phone tracing.
- Happens all the time in Law and Order Special Victims Unit, but it was a plot point of an entire episode. In "911", the squad gets a call from a 9 year old girl who says she's locked in a room, she's been abused, and does not know where she is. Olivia stays on the line with her and works with the squad to try and narrow down the area to where the girl might be being held. The number itself is untraceable, but a tech expert in cell phone mapping eventually is able to narrow down the cell phone tower the girl is using.
- Played straight in a number of episodes of The X-Files.
- "Pusher" comes to mind, where Mulder and Scully try numerous times to trace Modell's call, but cannot. The "countdown" aspect is even more sinister in this case, because in one instance, Modell induces a heart attack in the lead detective and hangs up seconds before the call is traced.
- Happens in Muppets Tonight where a pair of crewman trace the call... by methodically ripping the phone cable out of the walls.
- In an episode of the Britcom Nelson's Column, The Ditz gets a call from the police telling her that she's about to get a Harassing Phone Call, and she needs to keep him talking so they can trace the call. A few minutes in, Nelson asks how the police are supposed to have known this, and she looks blank for a second, then hangs up.
- In the NCIS: Los Angeles episode "Burned", the team attempt to trace a cell phone call to Callan. The guy on the other end is good enough to cut the call off when they triangulate it to within a block of his location.
- On an episode of Diagnosis Murder, the killer who had previously dodged phone traces allows the call to be traced to a pay phone to distract the police.
- Beautifully subverted on an episode of Wire in The Blood. The police are getting phone calls that the tech people can't trace to anywhere at all. Detective Jordan correctly deduces that the perp must be a phone engineer, and they find him all the faster for it.
- Lost had an episode in which Kate called the police from a phone booth, with a clock set to remind her of the seconds she had before they could track her.
- Attempted in one episode of Police Squad!. The call is ended before the trace is completed, and when they show the phone that they had 'tapped', there is a faucet attached to the handset.
- Hawaii Five-O (remake): Is done by a drug ring holding schoolchildren hostage.
- Certainly seen at least once on 24, probably much more often
- On "Redacted" on The Mentalist, the team acquired a dead man's cell phone, which one of their suspects was calling. They said it would take two minutes to triangulate the call. Patrick Jane took the phone, named a location and issued an ultimatum, then hung up. When everyone looked at him askance, he said that it would just be easier to bring the suspect to them. He was right.
- The aptly named Trace Tracker program in Uplink provides a very stereotypical depiction of this trope, as befits the game's Extreme Graphical Representation of Hollywood Hacking.
- Batman: Arkham City has Batman using the bat-computer to trace the phone calls he gets from Victor Zsasz. Bonus points since the missions actually involve racing as well - Batman has to race across the city to another public payphone each time in order to prevent Zsasz from killing a random person. Zsasz is actually careful enough to never stay on the phone long enough each time to be traced, either, but Batman can build up enough detail from his repeated calls to eventually find his lair.
- Invoked in the Real Trailer, Fake Movie The Waldo Ultimatum.
- Cracked's references to misconceptions about it.
- The Archer episode "El Secuestro" has ISIS trying to keep Pam's kidnappers on the phone long enough to trace the call (and usually failing, due to Archer or Malory's tactics). The two minutes needed to trace the call is lampshaded by Gillette, who says Malory cut money from the tracing program to pay for her new conference table.
Malory: Guess how many pygmies died to build this table. I'll give you a hint: six.
- The non-fiction book The Cuckoo's Egg has a fairly detailed account of what it took to trace an international data call in the late Eighties. The author, Clifford Stoll, set up a honeytrap to try keep a hacker on-line long enough to trace.