The brother of a Rocky Mountain News reporter takes his own life. The brother is a detective and it appears he was obsessed by the unsolved case he was working on. His twin brother, the reporter tries to make sense of the suicide, but what he finds leads him to believe it was not suicide. He finds evidence that there is a serial killer out there going after detectives.
As with all of Michael Connelly's book you are quickly engrossed in the story line and find twists and unexpected turns on almost every page.