A man's body is found in an empty house.
A gruesome memento of his murder is sent to his wife and children.

He is the first victim, and Detective Helen Grace knows he will not be the last. But why would a happily married man be this far from home in the dead of night?

The media call it Jack the Ripper in reverse: a serial killer preying on family men who lead hidden double lives.

Helen can sense the fury behind the murders. But what she cannot possibly predict is how volatile this killer is--or what is waiting for her at the end of the chase....