Chasing the Dime (Harry Bosch)

Henry Price has a whole new life-new apartment, new telephone, new telephone number. But the first time he checks his messages, he discovers that someone had the number before him. The messages on his line are for a woman named Lilly, and she is in some kind of serious trouble. Price is inexorably drawn into Lilly's world, and it's unlike any world he's ever known. It is a nighttime world of escort services, websites, sex, and secret identities. Price tumbles through a hole, abandoning his orderly life in a frantic race to save the life of a woman he has never met.