An old Chinese man, John Lee, the owner of a small store, was killed. Harry Bosch, who has known the victim for a long time, promises the Lee family to find the killer. But is it easy to do? The inhabitants of Chinatowns have long lived by their own rules, inaccessible to strangers. Bosch is forced to take on a new partner from the Asian Crime Squad. Gradually it becomes clear to them: most likely, old Lee was dealt with by gangsters from the Nine Dragons triad, to whom he stopped paying tribute. But as soon as the detective gets on the trail of the suspects, he is sent a video from Hong Kong: his daughter, thirteen-year-old Maddie, has been kidnapped. US law more unable to help. Going to Hong Kong, Bosch understands that he will have to act alone...