While CPD tries to take down a drug kingpin, Atwater faces a tough c..
Intelligence suspects the leader of a local mosque is behind the bom..
The wife of an alderman is beaten to death, and Voight is under pres..
While undercover, Ruzek discovers his father is working for a suspec..
A ride along goes sideways, and Burgess is faced with a difficult ch..
Politics get in the way as the team tries to rescue a teenage girl k..
After discovering the true cause of the high-rise fire, Intelligence..
Bad heroin is causing overdoses in Chicago, and Intelligence is a ma..
(Season Finale) Tensions run high as Intelligence seeks justice for ..
Halstead and Atwater go under cover to prevent military-grade weapon..
After Voight witnesses the kidnapping of a young woman with a myster..
A string of stash house robberies lead back to an unlikely individua..
Upton brings back an old undercover identity to help take down a met..
When a prominent Alderman known for his urban revitalization efforts..
Intelligence investigates a string of bombings targeting members of ..
Intelligence tracks down a vigilante killing rapists. The investigat..
When a basketball star is found murdered after an anti-police rally,..
When a gang from El Salvador infiltrates Chicago, Intelligence works..
When Atwater disappears at the house of a convicted felon, the evide..
While trying to find the pimp, Intelligence stumbles on the women's ..
Halstead's partying with Camila unintentionally puts him in the midd..
The death of Judge Tommy Wells' daughter puts Intelligence on the tr..
One of Voight's friends, Congressman Scott Graynor is found passed o..
In the wake of several gang-related child abductions, Intelligence m..
A picture perfect family is shot dead in their home and the team goe..
When Intelligence busts a meth lab run by gang leader Marshall Carte..
While investigating a drug-related homicide, Intelligence is stonewa..
When a young Latina woman is brutally murdered, Intelligence suspect..
After a van explodes during a Chicago street festival, a Muslim patr..
In the season finale, when Lindsay receives a panicked call from her..
A live video is streamed online showcasing a tortured man being beat..
When the team is called to an in-progress bank robbery, they come ac..
While investigating the murder of a teenage boy, Voight finds a conn..
After encouraging her sister to spend a night out with friends, Burg..
When Chicago's Night Crawler Bobby Trent is murdered over a single p..
After being tipped off about a woman running barefoot through the wo..
Olinsky's daughter remains in critical condition following a massive..
When Lindsay is tipped off about a grieving father looking to avenge..
When a charred body is found in a torched house, Intelligence must w..
The body of a 15-year-old girl is found crushed in an abandoned buil..
After a female jogger is brutally murdered in the park, Rixton and A..
When a mutilated sex offender is found dead, it is unclear if he was..
After the body of young woman is found with multiple gunshot wounds,..
Severide is brought into the District for questioning after his car ..
Voight calls the team to investigate a homicide involving the only w..
After receiving a complaint from a frustrated neighbor, Burgess and ..
Intelligence is tasked with tracking down the dealers of fentanyl - ..
When a car plows through a crowd of concert goers and gunfire erupts..
When Platt goes to her father Robert's house for dinner, she warns h..
When a call comes in reporting a car being stripped, Burgess and Tay..
Intelligence investigates a gruesome case. Upon further examination,..
In the Season 3 finale, the team investigates the murder of a single..
Lindsay and Halstead respond to a shots fired call and discover one ..
After a hooded man open fires on their patrol car, Roman is left wou..
Responding to a call about a suspicious duffle bag at the Chicago La..
When Burgess and Lindsay respond to a call about a stabbing, the ass..
While responding to a call of shots fired, Voight, Antonio, Halstead..
During a bank run for his off-duty security job, Halstead and his co..
Lindsay, Halstead and Mouse search for a connection when two shootin..
Burgess finds heroin in a duffel bag belonging to a mild-mannered an..
After escaping from a New York prison, convicted killer Gregory Yate..
Lindsay goes under cover in hopes of finding a police officer who ta..
Voight wants to make his former cell mate a confidential informant a..
A teenage girl is violated during a home invasion; Voight helps a fo..
A doctor connected to Voight is investigated after four patients wit..
A decapitated corpse found in Lake Michigan is connected to Voight's..
When Intelligence follows up on a tip about an upcoming drug trade, ..
Intelligence searches for a missing teen who they believe poses a th..
Ruzek's future with the unit is in question after a botched undercov..
Ruzek's future with the unit is in question after a botched undercov..
Voight believes the man who tried to kill him is someone he and Olin..
A man whose daughter is missing takes a member of the team hostage. ..
The team investigates the death of an 8-year-old boy. In other event..
In the Season 3 premiere, a detective is abducted by a heroin kingpi..
Voight and the team help retired Cmdr. Perry extract his nephew from..
A mass shooting takes place in an athletic club; Halstead and Platt ..
Still struggling with a loss, the team must put feelings aside when ..
Benson asks Fin and Amaro to help with the case; the prime suspect a..
A case involving one of Chicago's most wanted fugitives hits close t..
An investigation into a robbery gone wrong reveals Voight has ties t..
With a World Trade conference in Chicago, all members of intelligenc..
When an undercover narcotics officer goes missing, Antonio is asked ..
Burgess and Roman become trapped at a store; the intelligence team r..
Bunny ends up leading the team to a case that robbery-homicide has b..
Lindsay has second thoughts about the task force; Platt's new, sunny..
Ruzek's father is first on the scene of a double murder; an undercov..
Lindsay calls on Voight and his unit for help with her first case on..
A routine check on a potential terrorist threat puts burgess in the ..
Following a big heroin bust, Olinsky learns that the suspects are ho..
Asher is killed while Antonio is on his security duty; Halstead and ..
The final part of the crossover event finds our intelligence unit jo..
Ruzek and Atwater pose as prison inmates in order to find the man th..
Voight is attacked and abducted while trying to help Olive; Roman an..
The team races against the clock when two teenage girls disappear; V..
When a bartender takes a bullet intended for Halstead, the bounty on..
Several murder victims are found with a dollar bill pinned to their ..
As the Sheldon Jin investigation moves forward, Internal Affairs kee..
Atwater settles into his new role; Lindsay turns to Voight for help.
Voight and Platt share information about their pasts; Jin is caught ..
The Intelligence Unit members are dismayed to learn that Pulpo has b..
As Voight and his team search for the bombers, they realize there mi..
Dueling gangs are suspected when a massacre occurs and $8 million is..
Halstead is threatened with losing his job after Lonnie Rodiger is f..
Burgess and Atwater come across a gunshot victim and the only witnes..
Voight's new Internal Affairs handler proves to be suspicious of his..
Voight's son may be involved with the Fitori murder case, intensifyi..
New York's SVU agents Fin and Rollins help track down a serial kille..
Atwater and Burgess must keep their new patrol car in mint condition..
Olinsky tries to protect his daughter; a counterfeiting operation is..
Voight and the team check out a house that has been associated with ..
The unit mobilizes to find Antonio's son, who is believed to have be..
When District 21 goes after a Colombian drug gang following a series..