On Tonight

The friendship between Casey and Severide continues to be tested.

Casey and Severide reluctantly become the subjects of a day-in-the-life photo spread.

The mysterious 2005 disappearance of Ray Gricar, a district attorney in Pennsylvania who investigated sex-abuse claims made against Jerry Sandusky

A car belonging to a missing man erupts in a blaze, leading to clues regarding his whereabouts.

A Hollywood stuntman is gunned down in his own home. Who would want him dead?

Intelligence investigates a twisted case involving a congressman caught with a dead girl.

Intelligence works to take down an opioid ring after the daughter of a prominent judge dies of an overdose.

Halstead puts his credibility and career on the line to help solve a case with ties to his new girlfriend.

The trial of an accused child molester is jeopardized when the prime witness has difficulty dealing with his past.

Police suspect a corporate lawyer is connected to a murder and to a Romanian nanny thought to be sexually abused.