Nearly a year has passed and Bosch is still investigating the Daisy Clayton murder case. Meanwhile Edgar runs a sting on his dirty cops and Irvin Irving jumpstarts his mayoral campaign.

A detail from Kent's widow Alicia leads Bosch and the FBI to suspect a group of Sovereign citizens in connection to the stolen radioactive cesium and Overlook murder, but they clash over tactics, causing a deadly standoff.

When cops discover the body of a homeless man covered in radiation burns, the hunt for the cesium intensifies but Bosch and Edgar wonder if their assumptions about the crime have been wrong all along.

Judge Sobel hears Chandler's objections to the evidence against Mrs. Kent. Irving's new task force has a win. Hovan and Edgar close in on Avril. Billets gets a call from IA and Bosch uncovers a chilling connection in the Daisy Clayton case

Bosch closes in on the Daisy Clayton murder as Elizabeth falters. Avril is cunning and tries to slip away. Killoran blackmails Irving. IA investigates Billets. In Bosch's grip, Daisy's killer makes a shocking confession.