Voight teams up with an unlikely ally to take a killer off the streets while fighting to bring his Intelligence unit back together.
The Intelligence Unit races against time when a man from Torres's own neighborhood is violently abducted.
A homicide in the neighborhood where Burgess and Ruzek reside forces the team to investigate complicated relationships within the tight-knit community they call home.
A string of violent robberies across the city digs up one family's secrets. A surprising detail of Voight's past resurfaces.
Atwater reunites with an old friend from his academy days after a bombing rocks downtown Chicago.
Torres is dragged into a deadly conspiracy when a routine errand takes a violent turn.
Voight's suspicions ring true when a violent break-in steers the Intelligence Unit back to a chilling figure from a previous case.
Voight and the team work together to uncover the truth of the Bell case before more lives are lost.
Platt finds herself challenged when a simple favor for a former recruit spirals into something far more devastating.
Torres investigates the conspiracy surrounding the Morgan case, leading Intelligence into a tangled web of secrets.
Atwater pushes his personal life aside as he goes undercover in the flashy high-stakes world of carjacking.
Details about Imani's past emerge as the Intelligence Unit seeks the truth behind the sudden resurfacing of a decades-old missing child case.
An airfield emergency triggers a deeper mystery involving a passenger plane, propelling the Intelligence Unit into a high-stakes pursuit of the culprit, all under the sharp eye of the FBI.
Burgess takes a rookie officer under her wing as the team investigates a volatile drug case.
Ruzek grows suspicious when a DEA agent contacts him for details surrounding a missing informant.
Torres tries to stop the cycle of violence after a teenager is killed in an act of revenge.
Tensions between Voight and Imani begin to form when a series of ATM robberies hits the city.
A deadly house party leads the Intelligence Unit to uncover a family's alarming secret. Atwater faces a personal turning point.
Ruzek's investigation of a VHS tape found among his father's belongings has unexpected consequences.
Imani struggles to maintain her composure when a new lead reignites her investigation into her sister's disappearance.
When a key witness refuses to cooperate, the Intelligence Unit is forced to rethink their strategy to locate a fleeing suspect. Imani must confront her past before it's too late.
