Severide, Boden and Casey talk about what Bennie had. It’s being handed off to the arson squad but Severide made some copies first. Mouch hangs up a poster about a retirement party for a firefighter at a different house and complains about one time the guy made him look bad.
Brett is now awkward around Casey. She tells Foster and Kidd what the spin instructor said and they are here for it. The alarm sounds. It’s some guys on a college campus being dumb. They are shooting Roman candles at each other and one guy managed to shoot off two of his own fingers.
Even as they help him out, his buddies keep playing and one hits Casey. Brett patches him up. When truck gets back to the house, Kyle is there. He chats with Casey for a minute and then starts making the rounds. Herrmann and Ritter stop by to see the guy retiring. It’s a nice chat. Severide goes by arson to drop off Bennie’s notes and gets pushy.
When squad gets back, Boden takes Severide aside and yells at him for interfering and then puts him on leave. He grumbles about it to Casey and then goes back to the scene and talks to the owner and a suspicious neighbor. After shift, Brett gives Casey grief for not changing his bandage. Then Casey goes by the arson office and tips her off to what Severide was looking into.
Then he heads over to Molly’s where everyone is hanging out raisign a glass for the guy retiring. It comes to a screeching halt though when he melts down. Severide follows him out. The next day, Severide is trying to track down a witness in one of the investigations. Casey suggests Kidd reach out to him and help him out.
The retiring guy, gave Mouch his best firefighter medal at Molly’s. Ritter and Herrmann realize something is up and swing by his house. His wife says he’s on shift but when Herrmann presses she admits that he moved out. Ritter finally tells Herrmann he’s worried the retiree may harm or kill himself.
Severide has tracked down the witness and after chatting with her, and snooping around her place, he realizes that Bennie didn’t believe her. He suspected her. And now she may have planted another timer in the basement of a church. Boden, Casey and 51 move on it. They evacuate the church and manage to stop the fire before it spreads.
When they get back to the house, Severide is there but before he and Kidd can really talk, the arson squad shows up and they bring him in for real. Herrmann, Ritter and some other folks go see the retiree and stage an intervention. Severide briefs everyone on what he knows about the arsonist.
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