Lieutenant Jonathan Stride knows his partner Maggie Bei is in trouble when she reports a deadly crime on a bitter winter night. She's obviously hiding a terrible secret. And her silence only feeds suspicion. But Maggie isn't the only one keeping secrets. A seductive young woman has disappeared, leaving behind a stash of lurid fantasies and a cryptic message. I know who it is. Now it's up to Stride and his lover, homicide cop turned private investigator Serena Dial, to uncover a sordid web of violence and voyeurism that someone is willing to kill to keep hidden. Meanwhile, a predator with a vicious past is hunting them both--with a terrifying plan for revenge on the frozen lakes of Duluth...