Exclusive Mark Of A Killer Bonus: Rodney Alcala’s Psychopathic Behavior (Season 1, Episode 5) oxygen Insider Exclusive! Create a free profile to get unlimited access to exclusive videos, sweepstakes, and more! Sign Up for Free to View Mark Of A Killer Bonus: Rodney Alcala’s Psychopathic Behavior (Season 1, Episode 5) Alcala’s chameleon like ability and lack of empathy allowed him to maneuver through situations. Watch the Full Episode
