Chicago P.D. (2014)

S04E05 A War Zone

The team is on the trail of drug dealers peddling fentanyl, a substance tied to numerous overdoses throughout the city. During their investigation, Tay and Burgess stumble upon a wounded child who reveals a disturbing truth about his family situation. Meanwhile, Mouse is torn as he considers returning to military service. Platt updates Tay on her upcoming assignment.