Four unsolved murders. A killer with no motive. Only one woman can stop them. Forensic psychiatrist Jane Halifax is about to embark on the most challenging - and chilling - case of her career.

The first murder is brazen, violent and ritualistic. Committed in the victim's home, the killer leaves few clues as to their motive or their 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 desperate 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 intuition to enter the mind of the murderer before they strike again.

Praise for Transgression

'Dark and twisted, this addictive thriller will keep you guessing right up until the final chapter. Loved it!' Rebecca Gibney
'Rip-roaring crime writing at its best.' Tony Cavanaugh
'A nail-biter' The Age
'Taut, dark, tense . . . Don't turn out the lights.' Fenella Souter