Back when Harry Bosch was just a rookie homicide detective, he was inspired by his mentor, John Jack Thompson. After Thompson's death, his widow gives Bosch a murder book, one that Thompson took with him when he left the LAPD 20 years before—the unsolved killing of a troubled young man. Joining forces with Detective Renée Ballard, Bosch arrives at a disturbing question: Did Thompson steal the murder book to work the case in retirement, or to make sure it never got solved?

"Connelly is without peer when it comes to police procedurals, and once again proves that he's the modern master of the form."—Publishers Weekly (starred review)