Harry Bosch finds out one of his old cases is up for review and worries that all the cases since might be questioned. In another part of town, thugs in masks murder a pharmacist.

Detective Harry Bosch swings by the DA's office under the pretense of seeing Maddie. He encounters CIU Investigator Christina Henry who is spearheading the Borders petition based on a deathbed confession from another convict, Lucas Olmer. Bosch tells Edgar about Henry and wonders if the DA would really hang a case solely on another convict's word. If Borders goes free, all of Bosch's convictions will be questioned. Back at the station, Bosch and Edgar get a lead on the Esquivel murder: suspicious prescriptions written by a Dr. Garcia. Det. Pierce tells Bosch that the killers fled to a parking garage where they may have jacked a new ride. Pierce investigates a missing person report that fits their timeline while Bosch and Edgar head to Esquivel's house to look for Jose Jr. At the same time, Det. Robertson catches a homicide and finds a stripped car in Newton. Could the two crimes be linked? Bosch talks to Chief Irving about Borders. Irving led the task force in 1996 and Bosch found the key piece of evidence in the killer's apartment - a pendant Skyler wore. Irving promises he has Bosch's back. When Irving follows up with the DA about the body cam footage, he asks about Borders. She says they have new DNA evidence and if it matches Olmer, they'll support the petition for release. Maddie defends her father's case against Borders to Galligan, and he upsets her by suggesting that Bosch manipulated evidence to make the conviction stick. Later he apologizes, and they head to a bar to get better acquainted. Edgar meets his CI, Gary Wise, while Bosch meets with Chandler and her investigator Hector Bonner. Chandler insists Bosch let Bonner handle things, so Bosch and Edgar stake out the Garcia Pain Clinic. A white van pulls up and a dozen addicts get in. Bosch and Edgar follow the van on a pill run. Desperate to flee, Jose Jr. asks his cousin Oscar for money, a car, and a gun. Irving informs Bosch that the DNA matches Olmer. Borders might go free.

Bosch investigates new evidence that may overturn Borders' conviction, but he remains convinced they locked up the right man. Lieutenant Billets is forced to deal with Crate and Barrel's role in the accident at the pharmacy crime scene.