Synopsis

The arrival of Lieutenant Severide’s father, Bennie, stirs up old pain, particularly when he finds himself in conflict with Chief Boden regarding the death of a shared friend. Elsewhere, Mills offers aid to a shaken driver responsible for a collision, while Shay confronts a pivotal choice about her future with Clarice. And at Firehouse 51, Herrmann, Otis, and Dawson unravel a puzzling mystery surrounding their own establishment.