Matthew Daddario Joins Cast of Chicago Fire for Season 15

The casting confirmation arrived via an Instagram post from Da’Vinchi, who shared a photograph of himself and Daddario posing in front of a fire truck. While producers have kept character details under wraps, the gear worn by Daddario in the image suggests he will portray a firefighter candidate. Fans have responded with immediate enthusiasm, signaling high anticipation for the actor's debut on the long-running drama.

This transition in the ensemble coincides with significant personnel changes behind the scenes and on screen. Dermot Mulroney is departing the series after a three-season run, though the actor expressed gratitude for the experience during a recent appearance at the Flashback Weekend Chicago Horror Convention. Simultaneously, showrunner Andrea Newman is stepping down after a 14-year tenure, marking the end of an era for the Wolf Entertainment production.

Viewers are also bracing for the resolution of a major cliffhanger from the Season 14 finale, which left members of Rescue Squad 3, including Kelly Severide, caught in a building fire. Miranda Rae Mayo has hinted that the upcoming narrative arc may result in permanent consequences for the team, warning that even those who survive the incident may face career-altering injuries that pull them from active duty.