Josh Bywater

Boden (Eamonn Walker) forces members of Firehouse 51 to pull themselves back together in the aftermath of a harrowing fire explosion. When Severide (Taylor Kinney) goes missing for one week too many, Casey (Jesse Spencer) works to track down his whereabouts. Meanwhile, Newhouse (Edwin Hodge) brings some unexpected news regarding one of Mills’ (Charlie Barnett) relatives while Herrmann (David Eigenberg) and Otis (Yuri Sardarov) make some new goals regarding Molly’s.

Lieutenant Severide (Taylor Kinney) returns to Firehouse 51, but he is clearly not his usual self and Dawson (Monica Raymund) counts down the weeks until she gets started as a candidate at the Austin Firehouse. Meanwhile, Mills (Charlie Barnett) learns more about his father’s family and Herrmann (David Eigenberg) asks the rest of the Molly investors to come up with some new ideas to turn the business around.

Dr. Choi (Brian Tee) and Dr. Halstead (Nick Gehlfuss) face off over how to treat a patient with stroke symptoms while Dr. Manning (Torrey DeVitto) treats a young boy who fell in the river and watches the family turmoil unfold. Meanwhile, Dr. Rhodes (Collin Donnell) examines the man who saved Dr. Manning's patient and emphasizes the importance of learning from your mistakes to Dr. Reese (Rachel DiPillo). S. Eptha Merkerson, Marlyne Barrett, Yaya DaCosta and Oliver Platt also star.