The murder of a Hollywood producer has all the signs of a Mafia hit but something doesn't add up to Harry Bosch.

Harry Bosch is back in Homicide after disciplinary leave. In the wooded hills overlooking the Hollywood Bowl, he opens the trunk of a white Rolls Royce and finds a corpse. It looks like a simple case of Trunk Music - a Mafia hit, the victim shot in his own vehicle - but the Mafia weren't the only ones after movie producer Tony Aliso.

Tracing Tony A's Mob laundry in the face of official obstruction puts Harry up against the FBI and back in the arms of a gorgeous ex-felon. Warned off the case by internal investigators, nailing Aliso's elusive killer looks like the only way to make sure that Harry's first case back in Homicide isn't his last in the LAPD.