Chicago Fire (2012)

S11E18 Danger Is All Around

Title: Peril at Every Turn Plot: An old acquaintance reappears at Firehouse 51, teaming up with Kidd on a unique assignment. Meanwhile, Mouch and Capp are determined to protect Tony, who is just days away from achieving the CFD's flawless attendance milestone. Tensions rise as Gallo reconnects with a relative, rekindling past disputes.