The gang tries to help Marshall get over Lily, especially when he finds a credit card bill that leads to a hotel in New York City where some of her…

When it becomes obvious that a forensics expert raped and murdered a student, the investigation focuses on a criminology professor Cragen arrested decades earlier for similar crimes, and it’s up…

When Sal’s Pizza burns down, Jake goes out of his way to disprove the fire marshal’s assumption that the owner set the fire; a computer virus exposes the precinct members’…