Chicago PD 3×20 “In a Duffel Bag” – Responding to a call about a suspicious duffle bag at the Chicago Lakefront, Voight (Jason Beghe) is horrified to discover that the bag contains the frigid and unmoving body of a newborn baby. Determined to find the culprit who abandoned the infant, Intelligence receives a promising lead based on information provided by Chicago Med and Ruzek (Patrick Flueger) helps zero in on a potential suspect. Meanwhile, Voight is surprised to hear that his son is in town and Burgess (Marina Squerciati) and Roman (Brian Geraghty) grow closer. Also starring Jon Seda, Jesse Lee Soffer, Sophia Bush, Elias Koteas, LaRoyce Hawkins and Amy Morton. Guest starring Oliver Platt, David Eigenberg, Torrey DeVitto and Samuel Hunt.