Tom Greer

Reese volunteers as an NYPD Police Academy instructor in order to keep an eye on a talented young officer whose suspicious actions make him question her motives. Meanwhile, Martine – armed with information from Samaritan – hunts a member of the team.

Ellen has to perform emergency surgery at her house; Duncan wants answers when an innocent person in their plan becomes a victim.

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).