Forensic Files - Season 6 - Eps 19: Pure Evil
Creating a “profile” of a serial killer is part science and part intuition. The science involves studying criminals who have committed similar crimes, to see what characteristics they have in common. In a search for the killer of two teenagers in Texas, a behavioral profile led to a possible suspect - and hard science proved the profile was correct; it shows a behavioral study on how most serial killers also have a history of abusing animals.
About Forensic Files

Title: Forensic Files
First Air Date: 1996-04-21
Last Air Date: 2011-06-17
Status: Ended
Rating: 7.9/10 (from 71 votes)
Language: EN
Seasons: 15
Total Episodes: 400
Network: TLC truTV Court TV
Genres: Crime, Documentary
Production Companies: Medstar Television
Synopsis
Real crimes, disease outbreaks and accidents around the world are solved by experts using scientific laboratory analysis which helps them find previously undetectable evidence. Brilliant scientific work helps convict the guilty and free the innocent.
Cast

Peter Thomas
Self - Narrator (voice)