A long time ago, Joe Pike asked for help. In return, he would, one day, be called upon to return the favour, no questions asked. That day has come. Joe Pike is asked to protect the life of Larkin Conner Barkley, a spoiled rich girl who happens to be a federal witness in a major case. But someone is leaking information about their whereabouts, and the killers are getting all too close. So Pike hatches a plan: disappear into the anonymous underbelly of Los Angeles, turn the tables and hunt down the hunters.

When quiet Ellen Lang enters Elvis Cole's Disney-deco office, she's lost something very valuable - her husband and young son. The case seems simple enough, but Elvis isn't thrilled. Neither is his enigmatic partner and firepower Joe Pike. Their search down the seamy side of Hollywood's studio lots and sculptured lawns soon leads them deep into a nasty netherworld of drugs and sex - and murder. Now the case is getting interesting, but it's also turned ugly.

The day starts like any other in LA. The sun burns hot as the Santa Ana winds blow ash from mountain fires to coat the glittering city. But for Private Investigator Joe Pike, the city will never be the same again. His ex-lover, Karen Garcia, is dead, brutally murdered with a gun shot to the head. 

LAPD cop Scott James is not doing so well, not since a shocking nighttime assault by unidentified men killed his partner, Stephanie, nearly killed him, and left him enraged, ashamed, and ready to explode. He is unfit for duty - until he meets his new partner. Maggie is not doing so well, either. The German shepherd survived three tours in Iraq and Afghanistan sniffing explosives before she lost her handler to an IED and sniper attack, and her PTSD is as bad as Scott’s. They are each other’s last chance.

For maverick LAPD homicide detective Harry Bosch, the body in the drainpipe at Mulholland Dam is more than another anonymous statistic. This one is personal...because the murdered man was a fellow Vietnam "tunnel rat" who had fought side by side with him in a hellish underground war. Now Bosch is about to relive the horror of Nam.