Echo Park (Harry Bosch, Book 12)

When he receives word that somebody has confessed to the 1995 homicide of Marie Gesto, Detective Harry Bosch is surprised and relieved. For more than a decade, details of this savage murder had eaten away at the sensitive investigator. His emotions heighten, though, when he hears the murderer speak and learns that police missed a clue that could have led them to Gesto's killer and thus prevented nine subsequent murders. The realization leaves Bosch reeling with uncertainty about his colleagues and his own commitments. A very well done hard-boiled police procedural.