The Drop

Harry Bosch is facing the end of the line. He's been put on the DROP - Deferred Retirement Option Plan - and given three years before his retirement is
enforced. Seeing the end of the mission coming, he's anxious for cases. He
doesn't have to wait long. First a cold case gets a DNA hit for a rape and
murder which points the finger at a 29-year-old convicted rapist who was only
eight at the time of the murder. Then a city councilman's son is found dead -
fallen or pushed from a hotel window - and he insists on Bosch taking the case
despite the two men's history of enmity. The cases seem to be unrelated; one
leads to the discovery of a killer operating in the city for as many as three
decades, the other to a deep political conspiracy that reached back into the
dark history of the police department...