She was also Casey’s ex-fiancee with the pair maintaining a “friends with benefits” relationship.
Hallie Thomas was a doctor at Lakeshore Hospital (the precursor to Chicago Med). Pic credit: NBCīecause it’s been on the air so long, it’s easy for fans to forget some of the characters from Chicago Fire’s first season. Hallie Thomas Teri Reeves as Hallie Thomas on Season 1 of Chicago Fire. By submitting your information you agree to our T&Cs and Privacy Policy. Get updates on the latest posts and more from Monsters and Critics straight to your inbox.