after three years as a pi, harry bosch returns to the lapd, working with his former cop ally and partner, kizmin rider.harry and kiz are assigned to the lapds open-unsolved unit. these detectives are the closers; they put a shovel in the dirt and turn over the past. harry and kiz are immediately thrown into a politically sensitive and dangerous case when a dna match connects a white supremacist to the 1988 murder of a mixed race 16-year-old girl. as he navigates the case, harry finds a police department far different from the one he left three years earlier. a new chief has been brought over from new york to change the bad old culture of corruption - or thats the theory.but one thing hasnt changed - harrys nemesis, irving. the former deputy chief has been pushed from power and given a virtually meaningless new role. full of vengeance, irving calls harry a retread. he watches from the sidelines like an injured bear, hoping harry will make a mistake...