The Poughkeepsie Tapes is a 2007 American pseudo-documentary horror film written, directed, edited, and co-developed by John Erick Dowdle. It is about the murders of a serial killer in Poughkeepsie, New York, told through interviews and footage from a cache of the killer's snuff films.
Theatrical release poster
Found footage (film technique)
Found footage is a cinematic technique in which all or a substantial part of the work is presented as if it were film or video recordings recorded by characters in the story, and later "found" and presented to the audience. The events on screen are typically seen through the camera of one or more of the characters involved, often accompanied by their real-time, off-camera commentary. For added realism, the cinematography may be done by the actors themselves as they perform, and shaky camera work and naturalistic acting are routinely employed. The footage may be presented as if it were "raw" and complete or as if it had been edited into a narrative by those who "found" it.
Italian director Ruggero Deodato revolutionized the found footage style of narrative filmmaking with Cannibal Holocaust (1980), the first horror film using this technique.