Emily Peterson

Sergeant Hank Voight and his team of officers find themselves in a race against time as they try to locate the kidnapper who has taken the son of one of their own, detective Antonio Dawson.

The kidnapping of Dawson's son continues to have ramifications for the team, although the boy is now safe. Voight manages to alienate his own son when his preoccupation with the case prevents him from meeting him upon his release from prison.

After a balloon filled with cocaine bursts in the stomach of a student drug mule, the team frantically search for her three missing friends who have also been used to transport drugs and have been kidnapped on their return to Chicago.

Voight's son may be involved with the Fitori murder case, intensifying tension between Antonio and Voight, and Ruzek helps Burgess get retribution.

Intelligence do a deal with Pulpo, the man who kidnapped Antonio's son, in an attempt to get closer to the ruthless boss of a notorious cartel. Ruzek deals with difficult news, Lindsay has a brush with her past and Jin faces a problem.