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' 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.

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.

Firehouse 51 is called to an airfield when a passenger jet suddenly goes silent mid-air, triggering a high-stakes emergency. Their discovery cracks open a bigger and deadlier mystery — one with consequences that could ripple far beyond the runway and put countless lives in jeopardy. The crossover begins on Chicago Fire S14E13 (I) and Chicago Med S11E13 (II).