Darryl Theirse

Christian and Sean need recertification; Megan O'Hara's health takes a turn; Mrs. Gurbman needs purpose.

Robin, an old flame of Don's, returns to prosecute an incarcerated criminal, but when three witnesses involved in the case are murdered, Don and the team fear she will be the next victim.

Jerry defends an HIV-positive man charged with attempted murder for spitting in a police officer's face; Michelle sits second chair to the assistant DA from the Major Crimes Unit; Bobbi and Richard defend a 14-year-old in a homicide case.