Peter DeFaria

Firehouse 51 responds to a suspicious call from a neighbouring firehouse, so Severide and Cruz investigate. Also, the team welcome a new firefighter.

Casey and Dawson apply for permanent adoption of Louie, but encounter an obstacle. Severide receives an interesting proposition.

Manning returns from maternity leave and is immediately faced with a troubling case. The surgical team prepares to treat a Saudi prince.

Detective Lindsay calls in suspects in the disappearance of Katie's kidnapper, Jones struggles to fit in, and Herrmann celebrates his 20th wedding anniversary.

Patterson questions Boden's ability to lead the firehouse as the trial approaches; Brett and Chili find an unconscious man in a garden; Otis tries to fill his social calendar.

Crockett and Charles treat Justin's gym buddy. Maggie and Will help a robbery-homicide suspect. Hannah and Archer use Med's new opiate abuse A.I. programme.