When does Chicago P.D. return?

Chicago P.D. is an American police procedural television series broadcast by NBC. It stars Jason Beghe, Jon Seda, Sophia Bush, Jesse Lee Soffer, Patrick Flueger, Marina Squerciati, LaRoyce Hawkins, Archie Kao, Elias Koteas, Amy Morton, Brian Geraghty, Tracy Spiridakos, Lisseth Chavez, Benjamin Levy Aguilar, Toya Turner, and Arienne Mandi. The show follows the uniformed patrol officers and the Intelligence Unit of the 21st District of the Chicago Police Department.