Peter DeFaria

It Is What It Is, Until It Isn't. Marcel and Charles treat Lieu's gym buddy. Maggie and Halstead help a robbery-homicide suspect. Asher and Archer use Med's new opiate abuse AI program.

Reunion. After returning from maternity leave, Dr. Manning helps treat a teenager with an extensive history of medical issues, Dr. Choi goes above and beyond when a former Navy shipmate has a potentially life-threatening ailment, a budding romance.

You Will Hurt Him. Boden is left to wonder where things stand for Firehouse 51 as McLeod exerts her influence.

It's All In The Family. Dr. Manning's actions with a recent patient lead to serious repercussions. April and Noah disagree over a patient who is injured after a beating.

Acting Up. Cruz feels the burden of his increased responsibilities. Kidd, Gallo and Carver get caught in the middle of a gang war on a call. Herrmann wrangles Trudy for help lifting Cindy's mood.

Assignment Of The Year. When Asher is killed while Antonio is on his security duty, Voight and Olinsky make sure he is covered, Halstead and Lindsay go under cover, Kot wants an answer from Lindsay.