Oliver Platt

Jay agrees to sub in on Cam's bowling team, not knowing it's an all-gay league. Phil and Clair have an unexpectedly nice time with their neighbours, and Gloria and Mitch agree to go out with Haley.

Gloria, Claire and Hayley do a read-through of Manny's latest play. Cam becomes angry when he sees someone destroying his Fizbo costume.

Severide and Stella keep an eye out for Grant; Louie has Dawson questioning her dangerous career path; Casey's relationship with Susan Weller cools down; tensions between Borrelli and Boden reach a boiling point.

The investigation of Chief Boden intensifies, so the pressure is on Firehouse 51 to find evidence that could clear his name.

The team transport the victims of a terrible chemical leak to Chicago Med, where a bad situation quickly turns seriously worse.