Ed Kemper shot his grandmother once in the head and twice in the back and went on to murder his grandfather, his mother, her friend and six female hitch-hikers.
Jerry Brudos strangled Jan Whitney in his house and left her body dangling from the ceiling for several days.
Pietro Pacciani got 13 years in prison for killing a travelling salesman who had slept with his fiancée. Not only did Pacciani stab the man 19 times, but he also raped the corpse.
The World's Most Evil Psychopaths provides a concise, yet detailed look at some of the most dangerous individuals who have ever lived. Starting with examples of the earliest recorded psychopaths, author John Marlowe presents a carefully chosen cross-section of history's most infamous criminals, whose fascinating life stories are viewed with an unflinching gaze, making for a chilling, but engrossing read.