'Chicago P.D.' Season 12 - Everything We Know, Including 5 Cast Members Returning & 1 Star Who Won't Be Back

Chicago P.D. is heading back to our screens this fall!

Season 12 of the One Chicago series is set to premiere later this year on NBC.

The show follows the uniformed patrol officers and the Intelligence Unit of the 21st District of the Chicago Police Department as they go after the perpetrators of the city’s major street offenses.

Ahead of the show’s season premiere, we already know which stars are expected to return from the main cast.

Here’s what we know about Season...