A triple homicide has ties to a politician, but he may be just the first step toward the truth and a killer who will take desperate measures to keep his freedom.

A riot at an immigration rally ends in murder, and the political climate causes McCoy to assign a special prosecutor increasing tensions at the office.

An NYPD officer kills a troubled fellow officer who took hostages at gunpoint; detectives Lupo and Bernard find valuable stolen documents and a dead body at the man's apartment.

When a reality TV crew finds a dead man's body locked in a dog cage, detectives suspect the victim's wife.