Forensic Files II is an American true crime documentary series revival of Forensic Files. Broadcast by HLN for its first three seasons, its fourth season is being broadcast by sister network Investigation Discovery. The series has been promoted as a separate continuation of the franchise to differentiate it from the original series, with Bill Camp succeeding Peter Thomas as narrator.

Forensic Files, originally known as Medical Detectives, is an American documentary television program that reveals how forensic science is used to solve violent crimes, mysterious accidents, and outbreaks of illness. The show was originally broadcast on TLC. It is narrated by Peter Thomas, produced by Medstar Television, and distributed by FilmRise, in association with truTV Original Productions. It broadcast 406 episodes from its debut on TLC in 1996 until its final episode in 2011. Reruns shown on HLN were initially retitled Mystery Detectives before settling on the main title of the show in 2014.