Alex Delaware's relationship with his longterm partner is on the rocks. He is floored when Robin announces she's heading off on a three-month music tour.

But he soon has other things to think about. He is sent an envelope with no return address. Inside, he finds an album with gold letters on it - THE MURDER BOOK. It's full of macabre pictures of murders, with brief descriptions of how, and why, the victims died. One picture is marked 'Not solved' - the horrifically mutilated body of a young woman.

Unsettled, Alex calls his friend, LAPD detective Milo Sturgis, who seems strangely familiar with the case. What connects the photograph with Milo's past? What's more, why has it been sent to Alex - and by whom?