Jeremy Shouldis

Charles grows increasingly suspicious of a colleague's intentions. Lenox crosses a line to protect a patient. Hannah and Archer treat a soon-to-be father battling cancer.

How Do You Begin To Count The Losses. In the aftermath of Halstead's apartment fire, Marcel, Choi and Archer work together to try to save the survivors.

Secrets are uncovered when Goodwin's family comes together for Bert. Ripley and Frost treat two children stung by hornets in a treehouse.

A family of victims from a house fire is rushed to Gaffney; Lenox fights to save two sisters injured in an all-night rave turned tragedy; tensions mount between Goodwin and Abrams over difficult staffing changes.

Malignant. Rhodes and Zanetti race to save a member of Firehouse 51; April's brother struggles during his first day at the hospital; a woman saved from a burning building leads to a bigger mystery.

You Can't Always Trust What You See. Will returns to help Goodwin with a secret investigation. Archer and Charles deal with twins who insist on being identical inside and out. Stevie and Dylan treat a patient with sickle cell anemia.