- as Lieutenant Matthew „Matt“ Casey
- as Otis
- as Lieutenant Kelly Severide
- as Joe Cruz
- as Peter Mills
- as Mouch
- as Benny Severide
- as Gabriela „Gabby“ Dawson
- as Leslie Elizabeth Shay
- as Jay
- as Chief Wallace Boden
- as Jeff Clarke
- as Lieutenant Christopher Herrmann
- as Arthur
- as Devon
- as Nathan
- as Isabella
- as Gail McLeod
- as Detective Antonio Dawson
- as Capp
- as Beth
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