Ballard reopens a mysterious John Doe case while pursuing justice for a councilman's murdered sister. As she navigates reluctant witnesses, department politics, and her own demons, Ballard and her team uncover buried secrets that suggest corruption within the police force.

Ballard and Parker investigate housekeeper Yulia Kravetz's murder. Meanwhile, the hunt for the serial killer's latest victim reunites Ballard with retired Detective Harry Bosch.