After 24 years in prison, convicted killer Jason Jessup has been exonerated by new DNA evidence. Longtime defense attorney Mickey Haller is convinced Jessup is guilty, and he takes the case on the condition that he gets to choose his investigator, LAPD Detective Harry Bosch. Together, Bosch and Haller set off on a case fraught with political and personal danger. Opposing them is Jessup, now out on bail, a defense attorney who excels at manipulating the media, and a runaway eyewitness reluctant to testify after so many years.