I Am The Apocalypse — [s3e19]

Lieutenant Kelly Severide is critically injured in the blast while trying to stop the attacker. He spends much of the hour in surgery, experiencing visions of his late friend Shay while Dr. Hannah Tramble (Laurie Holden) fights to save him. Major Introductions & Arcs

(Oliver Platt): Chief of Psychiatry, whose first meeting with Chief Boden is a fan-favorite moment. [S3E19] I Am The Apocalypse

(Nick Gehlfuss): Jay Halstead’s brother, a brash plastic surgeon. Lieutenant Kelly Severide is critically injured in the

A patient enters the ER claiming to carry a deadly airborne virus (revealed later as Marburg) and detonates a grenade . [S3E19] I Am The Apocalypse