Leading up to the Chicago Fire season 14 finale, we knew that we would be in store for a number of exciting surprises and returns. With each finale, we can always expect unpredictable moments from this show, but as it turns out Chief Pascal wasn’t the only one who made a triumphant return to Firehouse 51 in the finale. Severide and Kidd had a visitor, too.

Before Chicago Fire season 14 episode 21 aired, the synopsis for the finale teased that the fan-favorite couple would “welcome a surprise visitor.” Naturally, that could mean a number of characters from past or present making a return appearance in the show after a lengthy amount of time away. Once this tease dropped, fans began making their predictions on who it could be.

Upon reading the pointed tease in the synopsis, obvious choices like Boden or Pascal didn’t seem quite right. But the penultimate episode of season 14 revealed the reason Kidd had to rush away and likely spoiled their surprise visitor. We’ve been counting down the days until the season finale would arrive so we could get the answer to this burning question, and now we finally know.

During the season 14 finale, Severide and Kidd unexpectedly find Isaiah at Firehouse 51 touring an engine with Vasquez. He’s in town with Lydia, and she dropped him off at the firehouse. He’s staying with his former foster parents while he’s in town visiting them and some friends. However, it’s turns out that Lydia’s still in Cleveland and didn’t know Isaiah left to visit them in Chicago.

Isaiah reveals that his mother isn’t able to take care of him anymore and he will have to live with Lydia. But he doesn’t want that. He wants to move back in with Severide and Kidd in Chicago. They are more than open to taking him back in, so long as they meet with his mother in Cleveland and make the decision together. They plan to take the trip after their next shift, but there’s no way they could have known they would be on a call that would put the whole team’s lives on the line.

Isaiah’s reentry into their live seemed to sway Severide toward accepting the position at OFI over continuing at Firehouse 51 as captain. Kidd agreed with Isaiah that it would be nice for him to have a job where he isn’t at risk every day. But now, both Severide and Kidd are in danger as Isaiah places a shirt in his dresser in his room at their apartment. Season 15 can’t come soon enough!