In deep Louisiana, a serial killer with a taste for medical experimentation is completing his most ambitious project yet. The media call him 'The Butcher' - and, so far, he's proved impossible to catch.

With her encyclopaedic knowledge of humanity's darkest minds, and years of experience examining victims, forensic pathologist Dr Wren Muller is the best there is.

And yet, The Butcher continues to elude her.

As body after body piles up, Wren's obsession grows. And her enemy becomes more brazen.

How far is Wren willing to go to draw the Butcher into the light . . .?