Chicago Fire season 14 is adding a new mystery guest when the show returns in 2026. Jeanine Mason, best known for her lead role on The CW’s Roswell, New Mexico, has joined the cast in an undisclosed role.
Her appearance was first teased via an Instagram post from Miranda Rae Mayo, showing Mason on set alongside David Eigenberg. While no character details have been revealed, Mason’s wardrobe hints she could be connected to the CFD — though a civilian role hasn’t been ruled out.
With big changes hitting the department this season and more new faces arriving, fans won’t have to wait long to find out where Mason fits in when Chicago Fire returns January 7, 2026.
