I stopped playing with Cliff when I was 11 years old because he threw an axe at me. The flying axe was no accident. When I barely managed to dodge the lethal projectile, a huge grin spread on his face ...

Think psychopath and most of us will probably come up with fictional characters like Patrick Bateman, and famous serial killers like Ted Bundy or Jack the Ripper - maybe even Sherlock Holmes comes to ...