Chicago PD

Sgt. Voight and the Chicago P.D.'s specialty Intelligence Unit attempt to track down an elusive drug kingpin with a gruesome calling card.

Grieving one of their own, the Intelligence crew races against the clock to find Detective Dawson's abducted son — before it's too late.

Voight promises to help teen D'Anthony get out of his gang. The unit uncovers a family-run gun-smuggling scheme.

An explosive hostage situation with an artist blows the lid off a counterfeit money operation as Officer Burgess discovers a hoarder's darkest secret.

Detective Halstead questions Voight's past — and trustworthiness. The quest to recover an unlikely group of drug mules gives way to a shocking collision.

Fellow detective Lindsay recruits Halstead to be her high school reunion plus-one. The unit enlists help from New York to take down the Riverwalk Killer.

Suspecting Voight knows more than he's letting on, Dawson calls his bluff. Officer Ruzek helps get Burgess out from under Sgt. Platt's thumb.

A shootout at an illegal gambling den leads Voight to question whether his ex-partner has gone dirty. Officers Atwater and Ruzek swap places for the day.

When Detective Olinsky's daughter witnesses a murder, the unit rushes to find a suspect named Calaca and solve the case before she has to testify.

The crew turns on Halstead when he becomes implicated in a murder. Ruzek and Burgess get closer after a botched bust and a civilian-studded shootout.