In order to kill her father, Marjorie Diehl-Armstrong had to make enough money to hire a hit-man and decided to use a collar bomb as a weapon. Little did her accomplice know the bomb on his chest wasn't a decoy. Rosie Alfaro stabbed her friend's 9-year-old sister over 50 times to rob the house and trade the items and money stolen in exchange for drugs and booze. To inherit her kind neighbor's farm, Kim Snibson brutally murdered the couple and got two men to do the work for her. (thetvdb.com)