This episode discusses how the duo's premeditation escalates into the execution of their murderous plans. Then, examines their sadistic motivations and paraphilias, while aiming to explain the possible biological, psychological and environmental dispositions, that may have led to their ever increasing severity of sadistically homicidal behaviour. Music Credits: Hangin' with the Worms - Doug Maxwell/Media Right Productions Lurking Shadows - Myuu Down - Joey Pecoraro