Episode 1 | The Silos

Intelligence investigates a murder-arson case as Voight and Lindsay continue to deal with the aftermath of Justin's death.

Episode 2 | Made a Wrong Turn

Intelligence searches for the fiance of a man found badly beaten in the most dangerous neighborhood of District 21.

Episode 3 | All Cylinders Firing

Platt and her father are brutally assaulted.

Episode 4 | Big Friends, Big Enemies

Intelligence investigates a shooting outside a concert that leads to a tangled web of gang-related violence.

Episode 5 | A War Zone

Intelligence tracks down the people who have been dealing a drug that's been linked to several overdoses throughout Chicago.

Episode 6 | Some Friend

A teenage girl is found dead in the home of a baseball player who's a friend of Olinsky's.

Episode 7 | 300,000 Likes

The only witness in the case against a suspected serial rapist is found murdered.

Episode 8 | A Shot Heard Round the World

A highly trained killer declares war on the Chicago police department.

Episode 9 | Don't Bury This Case

Kelly Severide of Firehouse 51 is brought to the District for questioning when his car is found to have caused a deadly crash, so the team tracks down a group of carjackers that may prove Severide's innocence.

Episode 10 | Don't Read the News

When the body of a young woman is found, the Chicago police realize there's a serial killer at large after comparing her case with others.

Episode 11 | You Wish

When a mutilated sex offender is found dead, it is unclear if he was the victim of a hate crime, sexual assault or self-mutilation. As Intelligence questions those related to the case, they find themselves up against a private "sp...

Episode 12 | Sanctuary

The investigation of a jogger's murder in the park is blocked by a church offering sanctuary to the prime suspects.

Episode 13 | I Remember Her Now

The body of a 15-year-old girl is found crushed in an abandoned building after she runs away from a treatment center for troubled girls. Voight sends Halstead undercover as a guard to work from the inside at the center, where he b...

Episode 14 | Seven Indictments

When a charred body is found in a torched house along with an injured boy, Intelligence works to find the cause.

Episode 15 | Favor, Affection, Malice or Ill-Will

Intelligence re-opens a case when a grieving father seeks to avenge his daughter's murder.

Episode 16 | Emotional Proximity

Intelligence works to find the arsonist behind a warehouse fire that left Olinsky's daughter fighting for her life.

Episode 17 | Remember the Devil

A hiker leads intelligence to a woman being held hostage in the woods outside Chicago.

Episode 18 | Little Bit of Light

Intelligence investigates one of Chicago's wealthiest families when "Night Crawler" Bobby Trent is murdered.

Episode 19 | Last Minute Resistance

Burgess's sister becomes a sexual assault victim after she's encouraged to spend a night out with friends.

Episode 20 | Grasping for Salvation

Voight uncovers a connection between the murder of a teenage boy and a 17-year-old case.

Episode 21 | Fagin

Intelligence uncovers a surprising crew of suspects in a series of bank robberies.

Episode 22 | Army of One

Intelligence tracks down a group of vigilantes torturing and killing pedophiles.

Episode 23 | Fork in the Road

Lindsay deals with the consequences of her actions when her mother is suspected of murder.