Echo Park by Michael Connelly

Harry has been working a cold case that happened 13 years ago. Marie Gesto disappeared when she went to a ranch to work with their horses. Harry had a gut feeling who was responsible for her disappearance, but could not come up with any proof. Now there is a serial killer in jail who claims he was the one who killed Gesto. Harry doesn't buy Raynard Waits story. This is the story of Harry and Waits, and how Harry gets to the truth of the matter. A real page-turner. Good to the end.