In Untraceable (2008), Diane Lane plays FBI cybercrime agent Jennifer Marsh.
Jennifer Marsh investigates a website that broadcasts live torture and claims its victims will die faster as more people visit. The premise turns online spectatorship into the film’s central threat and places Marsh in a race to identify the anonymous killer.
Colin Hanks plays her colleague Griffin Dowd, while Billy Burke plays detective Eric Box. The film was directed by Gregory Hoblit and released in 2008.
Untraceable is a fictional thriller, not a guide to real cybercrime investigations. Its use of online traffic as a mechanism for violence reflects anxieties about viral websites and anonymous internet audiences in the late 2000s.