Overview

• Showrunner Gwen Sigan says the unit has been disbanded for a month and the premiere centers on whether Voight can bring it back together.
• Arienne Mandi joins as ATF agent Eva Imani, who arrives undercover on a gun-trafficking case and quickly becomes a blunt, equal-footing partner to Voight.
• Sigan teases a dark, emotionally charged antagonist described as “creepy,” signaling a tougher season tone.
• The season’s theme is “roots,” with an action-focused Atwater episode and a chapter following Torres as he works through last season’s darkness.
• Chicago P.D. returns Wednesday, Oct. 1 at 10 p.m. ET/PT on NBC, as Burgess and Ruzek start married life with work complications.