Intent on bringing justice to Lieutenant Gormley after he is beaten by a mob outside his home, Danny and Frank enlist the aid of Detective Anthony Abetemarco, who has a personal connection to the neighborhood where the attack occurred. Also, Eddie and Jamie witness a dishonest arrest, and Danny searches for a witness to testify against a dangerous gang leader.

As Frank contends with a whistleblower within the NYPD who claims to have evidence of abuse of power in the organization, Danny and Baez investigate the case of a woman who was struck by a car under suspicious circumstances.