A murder at the red light zone prompts calls for its closure and a lawsuit against the city. When the Complaint Commissioner is frustrated by a lack of cooperation from the police, Da Vinci starts gathering evidence against Chief Jacobs. Zack and Friedland confront one another over their mutual deceptions. The high school girl implicated in the gay-bashing death blames two adult men for the crime.

A crisis looms at City Hall when the police and fire unions unite against cross-training, and investigators search the Mayor's offices for evidence that Da Vinci over-stepped his authority in his dealings with Chief Jacobs. Klotchko maneuvers to cover his tracks in the grow-op shooting. Brian Curtis encourages the witnesses testifying against Dubreau to leave the country.