Follows District 21 of the Chicago Police Department, which is made up of two distinctly different groups: the uniformed cops and the Intelligence Unit.
Jason Beghe / Jon Seda / Sophia Bush / Jesse Lee Soffer / Patrick John Flueger / Marina Squerciati / Elias Koteas / Laroyce Hawkins / Amy Morton / Brian Geraghty / Stella Maeve
The team travels to a Wisconsin gun show to take down a supplier who's manufacturing "cop killer" machine guns. Before going undercover together, Burgess discovers that Upton is dating Ruzek.
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.
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.
When a defense attorney is murdered after a fundraiser, Intelligence must confront the world of campaign finance, which makes them reconsider their decision to back the current pro-police mayoral candidate.
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.
In an attempt to dig himself out of a hole and save someone close to him, Antonio crosses a line that puts the entire team at risk.
While CPD tries to take down a drug kingpin, Atwater faces a tough choice between doing what's required to solve the murder of a young dealer and what's best for the community.
Intelligence suspects the leader of a local mosque is behind the bombing of an Army recruitment station. After a second explosion, Voight urges Halstead to follow the facts and not let his time in the service cloud his judgment.
The wife of an alderman is beaten to death, and Voight is under pressure from First Deputy Superintendent Brennan to close the case. To elicit a confession, Upton tells a dark story about her childhood.
While undercover, Ruzek discovers his father is working for a suspected drug dealer and is forced to ask the question: is his dad involved?
A ride along goes sideways, and Burgess is faced with a difficult choice: follow the advice of Voight, or a potential new ally.
Politics get in the way as the team tries to rescue a teenage girl kidnapped by a robbery crew. Voight and Platt try to exonerate Olinsky.
After discovering the true cause of the high-rise fire, Intelligence races to find the man responsible. And for Halstead it's personal.
Bad heroin is causing overdoses in Chicago, and Intelligence is a man down with Voight suspended. Antonio takes charge, but Ruzek undermines his authority.
A string of stash house robberies lead back to an unlikely individual; Voight confronts a key witness in the Bingham investigation.
Upton resumes an undercover identity to take down a meth ring run by a former criminal contact; Voight calls in a favor for Olinsky when pressure from Woods mounts.
A prominent Alderman known for his urban revitalization efforts is murdered; Olinsky receives an ultimatum from Woods.
Intelligence enlists Firehouse 51 to help prevent the latest in a series of bombings targeting the media.
Intelligence tracks down a vigilante killing rapists and Burgess questions whether the men who attacked her sister have really been punished.
Intelligence works with a visiting detective to take down a gang from El Salvador that has infiltrated Chicago.
Atwater disappears at the house of a convicted felon and Intelligence tries to rescue him.
While trying to find the pimp, Intelligence stumbles on the women's shelter where he's scouting out girls. And Burgess moves the case forward with a series of confidential tips, but risks putting her informant in harm's way.
Halstead's partying with Camila unintentionally puts him in the middle of a drug-related homicide. He's forced to choose between loyalty to his unit and his girl. Meanwhile, Voight finally discovers the mole in his unit.
The death of Judge Tommy Wells' daughter puts Intelligence on the track of a pill mill spreading into the suburbs of Chicago and the doctor enabling it. Meanwhile, Voight discovers who's been leaking information from the 21st.
A Congressman who's friends with Voight is found with a dead Ukrainian girl.
A Muslim patrol officer is suspected of causing a van to explode during a Chicago street festival when he goes missing and evidence points to his being involved.
A young Latina woman is brutally murdered and it's suspected she have been working as a drug mule until a different motive for her death is discovered.
Intelligence attempts to bust a gun deal that results in innocent bystanders getting shot.
Lindsay deals with the consequences of her actions when her mother is suspected of murder.
Intelligence tracks down a group of vigilantes torturing and killing pedophiles.
Intelligence uncovers a surprising crew of suspects in a series of bank robberies.
Voight uncovers a connection between the murder of a teenage boy and a 17-year-old case.
Burgess's sister becomes a sexual assault victim after she's encouraged to spend a night out with friends.
Intelligence investigates one of Chicago's wealthiest families when "Night Crawler" Bobby Trent is murdered.
A hiker leads intelligence to a woman being held hostage in the woods outside Chicago.
Intelligence works to find the arsonist behind a warehouse fire that left Olinsky's daughter fighting for her life.
Intelligence re-opens a case when a grieving father seeks to avenge his daughter's murder.
When a burnt body is found in a torched house along with an injured boy, Intelligence works to find the cause.
The investigation of a jogger's murder in the park is blocked by a church offering sanctuary to the prime suspects.
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.
The only witness in the case against a suspected serial rapist is found murdered.
A teenage girl is found dead in the home of a baseball player who's a friend of Olinsky's.
Intelligence tracks down the people who have been dealing a drug that's been linked to several overdoses throughout Chicago.
Intelligence investigates a shooting outside a concert that leads to a tangled web of gang-related violence.
Intelligence tracks down the people who've been dealing a drug that's causing multiple overdoses in the city.
Intelligence searches for the fiance of a man found badly beaten in the most dangerous neighborhood of District 21.
Intelligence investigates a murder-arson case as Voight and Lindsay continue to deal with the aftermath of Justin's death.
A murder investigation becomes personal for Voight when his son Justin is attacked in the same manner as a widowed, single mother whose body is found in the trunk of her car.
The team investigates a pyramid scheme operation that may be linked to a brutal murder at a family residence.
Burgess goes to court for shooting a 17-year-old honor student she suspects shot Roman.
Intelligence searches for the culprit who left a newborn baby in a duffel bag.
The team looks for a suspect who held a woman for months, physically abusing her and psychologically attempting to manipulate her into forgetting her identity.
The team investigates a kidnapping at a secret shelter for battered women.
Halstead and his co-workers get caught up in a violent shootout with bank robbers while on his off-duty job at the dispensary.
The police investigate a boy's execution-style murder, which may be connected to another shooting. The incident also leads officers and members of the community to gather for a candlelight vigil.
A college professor is caught smuggling heroin to Canada.
SVU detectives Olivia Benson and Odafin Tutuola come to Chicago to help find escaped killer Greg Yates.
Lindsay goes undercover to find a rogue police officer who targets women at a local casino.
Voight enlists his former cell mate to help take down a major cocaine supplier, while Burgess makes a move regarding her relationship with Ruzek and Roman comes up with a plan to fund Platt and Mouch's wedding.
The team investigates the robbery of a luxury condo and Voight suspects that the family was knocked out by a powerful gas.
A doctor from Voight's past is under investigation when four of his patients are sent to Chicago Med for an overdose of chemotherapy.
When a woman's decapitated body found in Lake Michigan is connected to Voight's social group, Lindsay worries that his relationship with the group could affect his ability to see the case objectively.
The team discovers the mutilated body of a government official and learn that he had access to very important devices.
Intelligence tries to find a missing teenage boy they believe could be a threat to the students at his wealthy school when they find disturbing drawings in his notebook.
When an undercover job goes south, Ruzek is investigated by a street deputy who will determine his future with the unit.
Voight and Olinsky hunt down a criminal they once put away.
A disgruntled father threatens to hold a member of Intelligence hostage until the team tracks down his missing daughter.
Burgess and Roman find the body of an eight-year-old boy while pursuing a gang-banger.
Intelligence pursues a heroin kingpin who has a member of the team kidnapped.
Retired Commander Perry enlists Voight and the team to help extract his cop nephew from a unit of corrupt officers who are robbing drug dealers. When things go bad Voight must take down a ...
When multiple people are shot inside an athletic club intelligence work to find and take down the shooters before there are any more victims. When they discover that all the targets were ...
As District 21 is struggling to come to terms with the loss of one of the team they are forced to put their personal feelings aside when a café is bombed. The unit has several suspects and ...
Benson is in Chicago helping Intelligence with a rape/murder case similar to a case in New York from a decade ago, so she calls in Fin and Amaro for assistance.
A case involving one of Chicago's most wanted fugitives hits close to home with Olinsky; an altercation with another officer lands Sean Roman in hot water; Platt helps Nadia prepare for her polygraph test.
The investigation into a drug robbery gone wrong uncovers Voight's link to a missing teen; the real reason for Halstead's brother's visit becomes clear; and Platt cares for a young girl at district.
The death of a protester at a world trade event seems to point to an Argentine official. Halstead's brother arrives in town and is soon stirring up trouble.
Antonio heads undercover with a dangerous robbery crew after a narcotics officer goes missing. Commander Fischer updates Voight on a missing officer that Narcotics had deep undercover with ...
After they are kidnapped while tackling a dangerous smuggling operation, Roman and Burgess pursue a man without calling for backup. Intelligence are spending the day receiving taser certification.
Bunny comes to Lindsay concerned about a suspicious repeat customer at her husband's rental company. This lead brings Intelligence into a case which robbery-homicide has been working for ...
Antonio and his sister talk to Elliot Gish about the person they think is responsible for the fire that killed Shay; Lindsay has second thoughts about the task force; Platt's new, sunny demeanor results in curiosity.
Complicated clues surround the murder of a mother and her daughter. While, Lindsay prepares for an undercover investigation in Bolivia, and it dawns on Burgess and Roman that they need to put the past behind them.
Lindsay calls on Voight and his unit for help with her first case on the federal task force; Burgess is relegated to desk duty.
With Burgess (Marina Squerciati) in the hospital after suffering gunshot wounds, the intelligence team is determined to find the people responsible. Lindsay (Sophia Bush) delays her start ...
A huge drug bust puts Olinsky's family in danger. Meanwhile, the team digs up a common thread with the drug suspects, and Burgess and Roman are paired with a K-9 officer, who is Roman's former girlfriend.
Antonio gets caught off guard in fellow police officer Romine's security company; and word from above is he will lose his job if the case isn't solved in 2 days. The unit comes together to ...
The Chicago Intelligence Unit continues working with Special Victims Unit to take down a child pornography ring.
The murder of a 10 year old witness sends Atwater and Ruzek undercover as inmates in a federal prison.
Voight is attacked and abducted while trying to help his son's girlfriend.
Two teenage girls have gone missing and the team know the clock is ticking to find them. Halstead, Antonio and Lindsay investigate a tenement which gives them a much needed lead. Voight ...
The bounty on Halstead's head becomes a serious reality as an innocent bartender takes a bullet meant for him. Olinsky tries to reason with Bembenek to call off the hit, to no avail. Voight...
Intelligence begins to look into a string of murders where the victims have a dollar bill pinned to their chests. Thanks to some digging by Ruzek, Voight learns his friend was involved in ...
Sergeant Voight tries to find out who is behind the murder of Jin, and come up with the unbelievable discovery and learned that Sergeant Edwin Stillwell playing a double game with the ...
Atwater is settling into his new gig on intelligence as Antonio is relegated to desk duty while recovering. Lindsay finally realizes she has no way out and confides in Voight for help. ...
As Antonio's life is now in question, Voight and Platt open up about their pasts. Jin is caught while tinkering with Voight's computer and uses the only scapegoat possible to keep him in ...
Commander Perry notifies the Intelligence unit that Pulpo has been released to help track down a dangerous cartel leader. This doesn't sit well with our team as he kidnapped one of their ...
The Intelligence Unit race against the clock to find the bombers.
Voight and the team discover a massacre, eight million in cash stolen and two wounded men in a clearing house. During questioning, one guy, Perko, provides some intel that is key to the ...
Voight pulls Halstead's badge when Lonnie Rodiger is found dead. After a car accident, Kelly Severide and Peter Mills discover the torso of Dr. Elliot, who has been instrumental in putting ...
In responding to a call Atwater and Burgess discover a gunshot victim and the only witness is Lexi Olinsky. The shooting is tied to a Latin gang. To protect Olinsky's daughter, Voight takes...
Voight's new internal affairs officer is skeptical of his actions. Voight must now work with his ex-partner from the gang unit.
The Fitori murder case is brought to the intelligence unit and Voight's son, Justin, may be involved. Gradishar fills Antonio in on the arrangement between Internal Affairs and Voight which...
Voight and Antonio enlist the help of agents at the Special Victims Unit in New York, Fin and Rollins, to help track down the culprit of a series of rape/murders. Burgess has an opportunity...
Atwater and Burgess are given a new patrol car, but are challenged with keeping it brand new. A run in with a psychotic woman leads the Intelligence Unit to discover a drug smuggling ...
More is learned about Halstead's dislike of the Rodiger family and it's family relationships all around as Olinsky shows a paternal side with his daughter Lexi in an attempt to protect her ...
Voight and team head to a house that's been associated with a number of top gangs. Events at the search result in Ruzek, being encouraged to seek some counseling which may have lasting ...
Antonio's son was kidnapped and he has a feeling the Columbian drug gang is to blame. Pulpo, the Columbian gang leader, is being held in jail and suggests his release may trigger the ...
In the series premiere, after a slew of brutal slayings, District 21 led by Sergeant Hank Voight go after a Colombian drug cartel cleaning house in Chicago. They discover D'Anthony who ...