Watch Series: Twisted Released in (2010) - Season 6 produced by USA, The TV Series categorized in Crime, Documentary, and content rating TV-14 with duration 60 min broadcasted as these networks Investigation Discovery, Streamed at Putlocker & directed by Neil Edwards. TWISTED takes an in-depth look at the world's most prolific serial killers through first-hand accounts and testaments of those closest to them, and attempts to answer the question: Was it nature or nurture? - Season 6