But virtually all predatory serial killers are psychopaths. Others are workplace bullies and embezzlers. Not all psychopaths are murderers, of course. If there’s one thing they have in common, they all lack a conscience. What else could explain his behaviour? I’ve seen a few of those manipulative, charismatic, callous, iron-fist-in-the-velvet-glove con artists over the years. Russell Williams, commander of Canada’s most important air base, was charged last year with two murders and two sexual assaults, many people immediately assumed he was a psychopath. A New Kind of Monster: The Secret Life and Chilling Crimes of Colonel Russell Williamsīy Timothy Appleby.