Watch Worlds Most Evil Killers - Season 4 Episode 1 HD Full Free on SolarMovie. Watch Worlds Most Evil Killers - Season 4 tv series online free. An in-depth look at the lives and crimes of some of the World's most evil killers including Jeffrey ...An in-depth look at the lives and crimes of some of the World's most evil killers including Jeffrey Dahmer, Richard Ramirez, Cary Stayner, Leonard Lake, Dorothea Puente and more.