News explodes that the LAPD is investigating one of its own in a murder case. Bosch homes in on the motive behind a string of homicides. Robertson's doubts about Bosch deepen. Edgar discovers another disturbing link between Harry and a murder victim. Irving assists the investigation of the "Koreatown Killer".
For LAPD homicide cop Harry Bosch - hero, maverick, nighthawk. From a dangerous maze of blind alleys to a daring criminal heist beneath the city to the tortuous link that must be uncovered, his survival instincts will be tested to their limit. Joining with an enigmatic and seductive female FBI agent, pitted against enemies inside his own department, Bosch must make the agonizing choice between justice and vengeance, as he tracks down a killer whose true face will shock him.