SOME CRIMES YOU CAN'T FORGET. Detective Renée Ballard is given the chance of a lifetime: revive the LAPD's cold case unit and find justice for the families of the forgotten. The only catch is they must first crack the unsolved murder of the sister of the city councilman who is sponsoring the department - or lose everything... OTHERS YOU CAN'T FORGIVE. Harry Bosch is top of the list of investigators Ballard wants to recruit. The former homicide detective is a living legend - but for how long? Because Bosch has his own agenda: a crime that has haunted him for years - the murder of a whole family, buried out in the desert - which he vowed to close. WHAT WOULD YOU DO IF YOU KNEW WHO DID IT? With the killer still out there and evidence elusive - Bosch is on a collision course with a choice he hoped never to make...