Back when Harry Bosch was just a rookie homicide detective, he had an inspiring mentor who taught him to take the work personally and light the fire of relentlessness for every case. Now that mentor, John Jack Thompson, is dead, but after his funeral his widow hands Bosch a murder book that Thompson took with him when he left the LAPD 20 years before -- the unsolved killing of a troubled young man in an alley used for drug deals. Bosch brings the...

"You've lost your daughter. She's addicted to drugs and to an abusive boyfriend. And she's made it clear that she doesn't want to be found. Then, by chance, you see her playing guitar in Central Park. But she's not the girl you remember. This woman is living on the edge, frightened, and clearly in trouble. You don't stop to think. You approach her, beg her to come home. She runs. And you do the only thing a parent can do: you follow her into a dark...