Harry Bosch is always getting into trouble with his cowboy ways. In Connelly's fourth Bosch novel, Harry finds himself suspended from the force after attacking his commanding officer. With extra time on his hands, Harry sets out to solve a cold case - that of his working girl mother who was found strangled in an alley 30 years earlier. Upon reading the old file, Harry is immediately convinced that the investigation was botched, and that his mother's killer was allowed to go free due to a big political cover-up. In typical Bosch fashion, he takes off to confront, interview, intimidate, bribe, and coerce all the witnesses he possibly can - without any back-up. With a wayward romance and a number of colorful characters thrown into the mix, this was a gripping thriller with fabulous insight into the mind of the strange and mysterious Harry Bosch.