Episode 1 | New Normal

With Voight suspended, Antonio takes charge of Intelligence to deal with overdoses of bad heroin, but Ruzek undermines his authority.

Episode 2 | Endings

Intelligence hunts down the man responsible for the high-rise fire and the case gets personal for Halstead.

Episode 3 | Bad Boys

The team tries to rescue a teenage girl kidnapped by robbers; Voight and Platt attempt to clear Olinsky's name.

Episode 4 | Ride Along

Burgess must choose between listening to Voight or potential new ally when a ride along goes sideways.

Episode 5 | Fathers and Sons

While undercover, Ruzek discovers his father is working for a suspected drug dealer and is forced to question if his dad is involved.

Episode 6 | True or False

When an alderman's wife is beaten to death, Brennan pressures Voight to close the case; Upton shares a dark time from her past to get a confession.

Episode 7 | Trigger

Voight tells Halstead to remain impartial when the leader of a local mosque becomes a suspect in the bombing of an Army recruitment center.

Episode 8 | Black and Blue

While CPD tries to take down a drug kingpin, Atwater faces a tough choice.

Episode 9 | Descent

Antonio crosses a line that puts the entire team at risk.

Episode 10 | Brotherhood

Voight and Ruzek lock horns over how to handle the aftermath of the Antonio situation. Meanwhile, a series of violent carjackings turns deadly, and Ruzek must rely on a C.I. he grew up with to help solve the case.

Episode 11 | Trust

An investigation into the death of a well known district attorney puts the Intelligence Division at odds with a mayoral candidate. Antonio returns to work but doesn't trust his own judgment when an operation goes sideways.

Episode 12 | Outrage

While chasing a heroin supplier, CPD crosses paths with a convicted criminal recently released on a technicality. Halstead's history with the man threatens the team's ability to put him back in prison.

Episode 13 | Night in Chicago

Atwater goes undercover to bring down the longtime head of a criminal enterprise and becomes entangled in a situation that tests his allegiances as well as his conscience.

Episode 14 | Ties That Bind

Upton and Burgess find themselves in a difficult situation when Intelligence tracks a cache of cop killer machine guns to a local gun show in Wisconsin.

Episode 15 | Good Men

Using information from Cruz, Intelligence chases down the robbery crew that's been using the lockbox key. Voight is under pressure to bring the crew to justice without tarnishing the reputation of a murdered firefighter.

Episode 16 | The Forgotten

Voight and the Intelligence Unit focus all their effort and resources into investigating the disappearance of an exotic dancer who served as a long-time criminal informant for their team.

Episode 17 | Pain Killer

A mayoral candidate is shot by an unidentified sniper, and CPD races to catch the shooter before he can take out his next target.

Episode 18 | This City

With the threat of a gang war looming, Voight and Ray Price must organize a peace summit to end the bloodshed before more innocent people get hurt. Burgess evaluates her future with Blair.

Episode 19 | What Could Have Been

Intelligence's investigation into the murder of Burgess' boyfriend threatens to reveal a dark side she was unaware of. The real motivation for his murder uncovers a much more unsettling truth.

Episode 20 | Sacrifice

A violent crew is hitting pharmaceutical delivery trucks and stealing drugs but their motivation is more complicated than just money. The case tests Upton and Ruzek's relationship.

Episode 21 | Confession

Antonio struggles with his guilty conscience as he tries to take down a major drug dealer. In order to protect his team, Voight takes a big shot at Kelton.

Episode 22 | Reckoning

With Kelton's election all but assured, Voight and his team must go off-book in a last-ditch effort to save Intelligence from getting axed.