What does a serial killer look like? Do they actually look like evil in physical form? Or could they look like your friendly next-door neighbor or the pretty girl you have a crush on....The answer is, a serial killer could be the person you least expected, and the saying" Do not judge a book by its cover" applies to so many things and could even save your life. Just because someone may look innocent and enticing on the outside, does not mean that they are not just wearing a mask to cover up something more sinister...This is the story of Paul Bernardo and Karla Homolka, also known as the " Ken and Barbie Killers".