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Life Is Fluid
Episode number: 1
Overview: A bust to bring down a heroin kingpin goes horribly awry. Olinsky reveals a dark secret from his past, and Halstead tries to get through to a spiraling Lindsay.
Natural Born Storyteller
Episode number: 2
Overview: A child abduction case hits too close to home for Dawson. Lindsay and Bunny's relationship reaches a critical impasse and Roman reveals his secret to Burgess.
Actual Physical Violence
Episode number: 3
Overview: The team is terrorized by a gun-wielding father who is desperate to find his missing daughter. Bunny stirs up accusations of misconduct from Voight's past.
Debts of the Past
Episode number: 4
Overview: Voight seeks revenge on the man who tried to kill him. A rumor causes a rift in Intelligence.
Climbing into Bed (1)
Episode number: 5
Overview: Ruzek's job is on the line after an ill-fated undercover op.
You Never Know Who's Who (2)
Episode number: 6
Overview: The team investigates a band of rogue operatives.
A Dead Kid, a Notebook and a Lot of Maybes
Episode number: 7
Overview: The team investigates a Columbine-like threat at a private school. Atwater seeks out a mentor; Olinsky's marriage faces a crisis.
Forget My Name
Episode number: 8
Overview: The team discovers the mutilated body of a government official while responding to an informant's tip about an upcoming drug trade. Meanwhile, Burgess helps plan a surprise for Platt.
Never Forget I Love You
Episode number: 9
Overview: The discovery of a headless body in Lake Michigan points to Hank's mob connections. Roman risks everything to help a grieving mother.
Now I'm God (III)
Episode number: 10
Overview: Intelligence investigates a doctor who gave his patients lethal doses of chemotherapy. Roman fights a wrongful shooting investigation. The crossover starts on Chicago Fire S04E10 The Beating Heart (I) and Chicago Med S01E05 Malignant (II).
Knocked the Family Right Out
Episode number: 11
Overview: Intelligence hunts down a crew responsible for a rape and robbery rampage. Lindsay is abducted on an undercover operation.
Looking Out for Stateville
Episode number: 12
Overview: Voight arranges for his former cellmate, Eddie Little, to be a CI in an effort to bring down a major cocaine supplier. Burgess makes a major move regarding her relationship with Ruzek. Roman develops a plan to help fund Platt and Mouch's wedding.
Hit Me
Episode number: 13
Overview: Lindsay goes undercover to catch a rogue cop who targets women at casinos. Platt risks her life in a negotiation crisis.
The Song of Gregory Williams Yates (II)
Episode number: 14
Overview: SVU joins Chicago P.D. in a manhunt for two notorious escaped serial killers. The crossover starts on Law & Order: Special Victims Unit S17E14 Nationwide Manhunt (I).
A Night Owl
Episode number: 15
Overview: While working at a sobriety checkpoint, Burgess finds a duffel bag full of heroin in the truck of a respected college professor who claims to know nothing about how the drugs ended up there. At District, Roman expresses his desires to become a Field Training Office to Platt, and Mouse sets Halstead up with an off-duty security job working for the attractive owner of a medical marijuana clinic.
The Cases That Need to Be Solved
Episode number: 16
Overview: When a young boy is executed, Intelligence turn to the boy's parents for information and upon further investigation, discover the father has a criminal background and was a part of a local gang.
Forty-Caliber Bread Crumb
Episode number: 17
Overview: While out on a bank run for his off-duty security job at the dispensary, Halstead and his co-workers find themselves under attack by a violent robbery crew. Meanwhile Roman, Burgess, Antonio, Halstead, Ruzek and Atwater follow-up on a lead and track down a potential suspect.
Kasual with a K
Episode number: 18
Overview: While responding to a call of shots fired, Voight, Antonio, Halstead and the team come across a secret battered woman's shelter and discover the owner has been wounded and a resident of the shelter has been kidnapped. Burgess and Roman go undercover to track down a man robbing people by catfishing them on a dating app. Lindsay opens up to Halstead about her past.
If We Were Normal
Episode number: 19
Overview: When Burgess and Lindsay respond to a call about a stabbing, the assailant turns out to be a kidnapping victim escaping her captor; Ruzek accuses Roman of having feelings for Burgess.
In a Duffel Bag
Episode number: 20
Overview: Responding to a call about a suspicious duffel bag at the Chicago Lakefront, Voight is horrified to discover that the bag contains the frigid and unmoving body of a newborn baby. Meanwhile, Voight is surprised to hear that his son is in town and Burgess and Roman grow closer.
Justice
Episode number: 21
Overview: Burgess gives chase after Roman is wounded by a hooded perp who opened fire on their patrol car and shoots who she thinks is the suspect, but no gun is found at the scene—and the person she shot is a 17-year-old honor student.
She's Got Us
Episode number: 22
Overview: Lindsay and Halstead respond to a shots fired call and discover one survivor: a young girl. Antonio and Olinsky investigate a "self help" group. Platt makes the case to Crowley for why Burgess and Roman should remain partners.
Start Digging
Episode number: 23
Overview: In the Season 3 finale, the team investigates the murder of a single mom who was in contact with Voight's now-reformed son, who was himself brutally assaulted. Meanwhile, Roman makes a major decision and Crowley plans to make changes within the unit.