Tom Greer

To keep tabs on a talented young officer, Reese volunteers as a police academy instructor; Martine searches for a member of the team.

Erin's attempt to convict a slippery mob boss for an old murder is muddled when her former informant, Vincent (Dan Hedaya), leaves witness protection to provide his old boss with an alibi. Also, Frank finds himself in a departmental war with Commissioner of the New York City Fire Department, Stan Rourke (Dan Lauria).

Ellen has to make another life-changing choice when she performs emergency surgery in her own home. Meanwhile, Duncan demands answers when Archer tells him that an innocent person in their plan has become a victim.

A Hollywood producer is attacked during a party at his home by a woman who claims he tried to sexually assault her; Tommy prepares for the LAPD recertification process to demonstrate her fitness for her position.