TV Jesse Spencer returning to Chicago Fire in season 10 finale Time for a Chicago Fire wedding! By Samantha Highfill Samantha Highfill Samantha is a writer based in Los Angeles. Television is her one true love, and she tweets about it. A lot. EW's editorial guidelines Published on April 27, 2022 05:35PM EDT He couldn't stay away for long. EW has confirmed that Chicago Fire vet Jesse Spencer is returning in the upcoming season 10 finale. Spencer exited the show last season during the series' 200th episode when his character, Casey, made a tough decision. After a lot of thought, Casey decided to relocate to Oregon in order to care for the sons of his late friend Andy Darden (Corey Sorenson). In doing so, Casey left behind his girlfriend, Sylvie Brett (Kara Killmer), who has spent much of season 10 missing him. In recent episodes, Brett has actually been missing from the firehouse because she's been on a trip to visit Casey in Oregon. And now, fans can stop wondering if we're only going to hear about Casey from here on out, because he's coming back! Jesse Spencer on 'Chicago Fire'. Lori Allen/NBC Specifically, he's coming back to be Severide's (Taylor Kinney) best man in his wedding, which will take place during the season 10 finale. But don't expect everything to go smoothly. Co-showrunner Derek Haas told Variety, "The wedding is not going to go as planned. Plus, there'll be at least one surprise guest at the wedding besides Jesse. It became a matter of how many people could we get in one day availability-wise, so we put together a wish list." The season 10 finale will air Wednesday, May 25. Sign up for Entertainment Weekly's free daily newsletter to get breaking TV news, exclusive first looks, recaps, reviews, interviews with your favorite stars, and more. Related content: Jesse Spencer exits Chicago Fire — here's how they handled Casey's goodbye Chicago Fire star Yuriy Sardarov bids farewell to Otis How the Chicago Fire showrunner fools spoiler-seeking fans on Twitter