Columbine

by Dave Cullen

"Psychopaths are capable of behavior that normal people find not only horrific but baffling," wrote Dr. Robert Hare, the leading authority on psychopaths. "They can torture and mutilate their victims with about the same sense of concern that we feel when we carve a turkey for Thanksgiving dinner."

(It's usually a him--more than 80 percent are male.)

Psychopaths don't act like Hannibal Lecter or Norman Bates. They come off like Hugh Grant, in his most adorable role.

Joy, grief, anxiety, or amusement--he can mimic any on cue. He knows the facial expressions, the voice modulation, and the body

language. He's not just conning you with a scheme, he's conning you with his life. His entire personality is a fabrication, with the purpose of deceiving suckers like you.