Five years after her husband's murder, Laurie Moran, a TV producer and single mother, starts filming a new "cold case" series in which four women involved in the unsolved murder of a wealthy Westchester matron reunite to recreate the scene of the crime--along with the real killer.

LAPD detective Harry Bosch simultaneously investigates a killer who has been operating undetected for thirty years and a political conspiracy that has its origins in his police department.