Defense attorney Mickey Haller is back, taking the long shot cases, where the chances of winning are one in a million. He agrees to represent a woman in prison for killing her husband, a sheriff's deputy. Despite her conviction four years earlier, she still maintains her innocence. Haller enlists his half brother, retired LAPD Detective Harry Bosch, as investigator. Reviewing the case, Bosch sees something that doesn't add up, and a sheriff's department...