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.

Stuck now at the desert shill encampment with no easy escape plan and no way to communicate with Edgar, Bosch befriends Clayton and searches of information about his murder suspects. He learns about the death of her daughter, Daisy. Maddie, still raw from losing her mom and fearing the worst, asks Billets about where her dad may be. That Bosch is still undercover is news to Billets, but she reassures Maddie that everything will be okay. Pierce and Vega, concerned that the pharmacy killers have also learned Jose Jr.'s hiding spot, head to Bakersfield to find him. They intercept one of the killers who's there to tie up the loose end that is Jose, Jr. While Cronyn assures Borders that Bosch will play no role in his upcoming hearing, Chandler lays legal groundwork with a visit to her good friend Judge Sobel. Billets and Mankiewicz realize just how far up the chain of command the manipulated crime stats might go, forcing Billets to wrestle with what she'll do with the information. On a pill run back in LA, Bosch gets Clayton arrested, hoping to use her to get a message to Edgar. On return to the compound, however, Walsh has grown weary of Bosch, and Bosch finds himself in another dangerous jam. Edgar, researching the Haitian businessman he saw with Marcos and Arias, gets a call about Clayton's arrest, and the note she carries from Bosch. Scott Anderson gets tipped about police misconduct, and Cronyn suggests Bosch planted evidence to frame Borders for murder. Anderson seeks corroboration with mixed results. But lacking only a statement from Bosch, Anderson's editor decides to run the story.