In the life of Harry Bosch, a detective of the Los Angeles police, a black strip comes: his house is destroyed by an earthquake, his beloved woman leaves him and ... he is temporarily suspended from work for assault. But now Harry has the leisure to study the old materials of the murder case, which occurred in the distant 1961. This personally concerns Bosch: the victim was his mother, a “call girl”. Why did the crime remain unsolved? Who is the true culprit of her death? In general, it is not idle curiosity that forces Bosch to confront the demons of the past, and during the investigation it turns out that all the strings lead to a luxurious residence on the Hollywood hills . Bosch is approaching a solution with each step, and each step may be the last.