Daniel Kyri

Vasquez fights to prove himself at 51; Violet and Novak pursue a troubling mystery; Herrmann is on a quest to keep Molly's profitable.

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 and Kidd continue to investigate Benny's old arson case, unexpected news leads Brett to ponder a big decision and all hell breaks loose.

A rare but deadly bacteria takes its toll on numerous victims around the city, leaving Chicago's finest first responders to work together alongside the CDC to resolve the dangerous situation. Severide suspects something bigger is happening.

When one of the team gets injured on a call, Severide becomes obsessed with helping out. Meanwhile, Foster grapples with a big decision. Kidd is concerned for one of her high school trainees.

Following the subway tunnel collapse, Ruzek and Kidd treat injured passengers and track down the missing offender; Archer and Frost perform a life-saving amputation; Lenox feels the weight of the CPD's hopes as she fights to save one of their own.