Raise the Dead (S05E04)

Title: Reviving the Past Plot: While investigating the Skyler case, Bosch grows increasingly skeptical of the validity of Olmer's confession. Meanwhile, Robertson focuses on uncovering the identities of the pharmacy murderers. In an effort to link the crime to the pill mill, Bosch goes undercover and forms a bond with another veteran. Pierce and Vega pursue a lead concerning Jose, Jr., while Edgar uncovers the hidden complexities of Gary Wise's troubled life.