Transgression / Roger Simpson.

"The first murder is brazen, violent and ritualistic. Commited in the victim's home, the killer leaves few clues as to their motive or identity. All the police know is that the perpetrator entered the house and impaled the art collector on one of his own priceless sculptures before melting away into the night. Inspector Eric Ringer is despearate for Dr Jane Halifax to profile the killer, but Jane is cautious. She and Eric have a past... plus, she hates these kinds of cases, a psychopath is a psychopath, any way you slice it. But there's something about this killer that intrigues Jane. And as the bodies pile up, Jane must use all her knowledge and intution to enter the mind of the murderer before they strike again."--Back cover.