A suicide shakes the staff. Dr. Choi and Dr. Halstead face off over how to treat a patient with stroke symptoms. Family turmoil unfolds when a boy is treated after…

Following the first Republican debate, Olivia is presented with damaging information about an opponent and enlists the Gladiators to verify its authenticity. Meanwhile, David deals with fallout from his dating…

Scanlon is haunted by dreams of his late brother, leaving Allison concerned about her colleague. Also, while making her final preparations for college, Ariel has visions of missing young women,…