One year after leaving the force, LAPD detective Renee Ballard returns to help Harry Bosch track down the killer who is responsible for the murder of his entire family.

Ree Ballard and the LAPD's Open-Unsolved Unit get a hot shot DNA connection between a recently arrested man and a serial rapist and murderer who went quiet twenty years ago. The arrested man is only twenty-four, so the genetic link must be familial: His father was the Pillowcase Rapist, responsible for a five-year reign of terror in the city of angels. But when Ballard and her team move in on their suspect, they encounter a baffling web of secrets...