Anatoly Yuriyovych Onoprienko was a Ukrainian serial killer and mass murderer. He is also known by the nicknames "The Beast of Ukraine", "The Terminator", and "Citizen O". After police arrested the 37-year-old former forestry student on April 16, 1996, Onoprienko confessed to killing 52 people. 1h | Genre: Documentary, Biography | Stars: Pete Stacker, Anatoly Onoprienko, Natalia Karpenko