While out on a jog, Severide comes across a secluded and empty construction site and encounters a young boy who has been trapped in a backhoe loader and is in…

An arsonist targets Lt. Severide. Meanwhile, Station 51 is under scrutiny by Gail McLeod, a financial consultant for the city who is deciding if any firehouses should be closed. Mouch…

In the wake of Heather’s incident, Lt. Casey is having a hard time handling his newfound responsibilities. Lt. Severide is on edge dreading the next attack from the firehouse’s arsonist….

Lt. Severide has his strong ideas on who the serial arsonist is, but first needs to find proof to back up his suspicions. Meanwhile, Lt. Casey adjusts to his new…

When a convicted murderer hijacks a prison van, the team scrambles to find him and the abducted prison guard before it’s too late. Burgess questions Ruzek’s motives in a case,…

The team investigates a string of brutal pharmacy robberies, and Halstead connects with one of the victims about their Army careers. Upton suspects there is more to the story and…

Still reeling from the death of informant Anna, Voight faces a new threat as he tries to keep the neighborhood clean. New wrinkles develop in the Upton, Halstead and Voight…

A robber with a bomb attached to him is blown up in front of a convenience store, and CBI soon discovers that there may be connections between this case and…

Delko’s deepest secrets are threatened to be exposed when the daughter of his therapist is killed. The team rushes to find the killer before this happens.

Carlton’s ill health becomes a boon to the gang when Carlton’s nephew Lewis invites them over to Carlton’s house to start selling off the old man’s items. Joe and Helen…