Tom Greer

One of Erin's informants leaves witness protection to give an alibi for a former boss facing murder charges. Frank gets into a battle with the New York City Fire Department commissioner.

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

Ellen has to make an agonising choice between saving her husband and protecting her children, and she finds herself forced to perform emergency surgery in her own home.

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.