Daniel Kyri

Dr Charles and Dr Reese search for answers when a mother brings in her daughter claiming she is possessed. Dr Rhodes and Dr Bekker are tasked with finding a way to save a pair of conjoined twins.

Firehouse 51 responds to a massive freeway accident that impacts someone close to them. Then, Foster runs into a face from her past.

The mattress factory fire spirals out of control. Truck and squad lay it on the line in hopes of getting the trapped victims out alive.

Severide starts off on the wrong foot at his Office of Fire Investigation assignment when, despite orders, he reopens an old case. Herrmann is on a mission to discover what caused an apartment fire and Kidd finds herself burning the candle at both ends.

An unexpected visit throws Casey for a loop and Severide sets out to exonerate a wrongly convicted arsonist. Kidd pays the price for burning the candle at both ends, while Cruz goes on a mission to fix one of Otis's old toys.

Cruz leads the charge in getting the firehouse to gear up for the Polar Plunge, and Herrmann has a hard time bouncing back after dealing with a tough call. Plus, Foster's personal relationships begin to interfere with her job.