Watch Chicago Fire Full Seasons Full Episodes Runtime : ArrayGenre : DramaStars : Jesse Spencer (Matthew Casey), Taylor Kinney (Kelly Severide), Monica Raymund (Gabriela Dawson), Eamonn Walker (Wallace Boden), David Eigenberg (Christopher Herrmann), Yuriy Sardarov (Brian "Otis" Zvonecek), Joe Minoso (Joe Cruz), Christian Stolte (Randy "Mouch" McHolland), Kara Killmer (Sylvie Brett), Steven R.