A suspicious call to a neighboring firehouse leaves some unanswered questions among the ranks of Firehouse 51

Casey's run for Alderman hits a snag that could derail his grand plans.

A beautiful undercover agent for the DEA is raped and murdered, leading to a complicated investigation of a Columbian drug cartel, and the toughest case of Cabot's career.

An investigation exposes crimes at an adult group home.

Intelligence tracks down a vigilante attacking rapists.

Intelligence investigates a string of bombings targeting members of the media.

A recent law school graduate in Georgia who has a promising future disappears without a trace.

A woman whose ex-husband killed six people in Arizona, allegedly targeting individuals with connections to their divorce