The local authorities in Cleveland enlist the help of the BAU to assist in the pursuit of a serial killer who appears to be copying the methods used by famous murderers from the past.
A story of greed and betrayal pits Patrick Jane against a group of financiers when the CBI investigates a series of murders at a corporate retreat in the Sierra Nevada wilderness.
Bosch has to face the aftermath of his confrontation with Waits, while his daughter's unexpected visit offers some precious time together. In the wake of the bones investigation, Bosch's job is in jeopardy, and he's suddenly on the outside once again.
The protest looming, Billets strikes a deal with the activists. Irving realizes that old friends are new enemies. Crate and Barrel solve the case of their careers. As the Task Force scrambles to salvage their investigation, Bosch finds himself in the depths of underground Los Angeles.
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. Maddie’s discovery earns Chandler’s praise. DEA Agent Charlie Hovan discloses his connection to Jamaican drug dealers with possible ties to Edgar’s dirty cops.