Clarke continues to inform Gail about 51’s rule bending, and later gets warned by Hermann’s that snitches, like vermin, are eventually caught and expelled from the house.
Severide is convinced Hadley is the arsonist, and Benny agrees. An investigation is opened and Benny pleads with Severide to not impede in the process; to just stay away from Hadley. After a fire that nearly kills a young couple, Severide goes off on Hadley.
Casey adjusts to his new situation with Heather’s boys. The boys worry Casey, like their mom and dad, will eventually leave. Casey promises them that he’s not going anywhere.
Jay, the regular customer at Molly’s that Dawson takes a liking to, is revealed to be an informant for Arthur.
Cruz and Otis compete for the third room in Shay and Severide’s apartment.