Dr. Charles and April team up to take on a mysterious patient in the ED. Dr. Halstead is forced to make a life-or-death decision for one of his trial patients. Dr. Marcel is confronted by his past when a former acquaintance is brought into the ED.
Quest roles:
Nate Santana(Dr. James Lanik), Lorena Diaz(Nurse Doris), Anthony Lee Irons(Alvin Booker), Tehmina Sunny(Dr. Sabeena Virani), Jill Abramovitz(Susan Charles), Hannah James(Megan), Wendy Mateo(Mari Esquivel), Lynne Lipton(Ms. Webb), Elena Marisa Flores(Officer Rosado), Ricardo Gutierrez(Ruben Esquivel), Linda Reiter(Mrs. Bissett), Marie Tredway(Nurse Trini), Caitlan Taylor(Paramedic Michelle), Thomas H. Adisi(George), Kiera Prinz(Kelly Bissett)