For LAPD homicide cop Harry Bosch — hero, maverick, nighthawk — the body in the drainpipe at Mulholland Dam is more than another anonymous statistic. This one is personal. The dead man, Billy Meadows, was a fellow Vietnam “tunnel rat” who fought side by side with him in a nightmare underground war that brought them to the depths of hell. Now, Bosch is about to relive the horror of Nam. 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 once again be tested to their limit.