Watch Series: Unusual Suspects Released in (2010) - Season 8 produced by USA, The TV Series categorized in Documentary, Drama, Crime, and content rating TV-14 with duration 45 min broadcasted as these networks Investigation Discovery, Streamed at Putlocker & directed by Robert M. Wise, Douglas Elford-Argent, W.D. Hogan. Unusual Suspects is an American documentary television series on Investigation Discovery. The series debuted on June 21, 2010. The series showcases many of the most shocking and difficult cases in law enforcement history, and also sheds light on the investigations that led to the arrest of the culprits. - Season 8