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….

Gallo, Violet and Ritter debut their microbrewery business at Winterfest. Brett prepares to present her paramedicine program to an oversight panel. Firehouse 51 gets in the holiday spirit.

With Joe Carroll awaiting execution on death row and all signs of his following erased, Ryan Hardy has moved on from the dark events of his past. But his newfound…