Harry Bosch finds himself at the center of an explosive case when an activist attorney is killed on the cute little L.A. trolley called Angels Flight, far from Bosch's usual Hollywood turf. The case is so volatile—and the dead man's enemies inside the L.A.P.D. so numerous—that it falls to Bosch to solve it.

As the streets superheat, Bosch's year-old Vegas marriage is unraveling. The hunt for the killer leads Bosch to another high-profile L.A. murder case, one where every cop had a motive. The question is, did any have the guts?