Jason Beghe Sergeant Hank Voight Actor Sophia Bush Detective Erin Lindsay Actor Patrick Flueger Officer Kyle Ruzek Actor LaRoyce Hawkins Officer Kevin Atwater Actor Elias Koteas Detective Alvin Olinsky Actor Jon Seda Detective Antonio Dawson Actor Jesse Lee Soffer Detective Jay Halstead Actor Marina Squerciati Officer Kim Burgess Actor Amy Morton Desk Sgt. Trudy Platt Actor Brian Geraghty Officer Sean Roman Actor Stella Maeve Nadia Decotis Guest Star Melissa Carlson Meredith Olinsky Guest Star Spencer Grammer Jenn Cassidy Guest Star Kevin J. O'Connor Commander Fischer Guest Star Patrick Clear Judge Darren Lachlan Guest Star Jay Whittaker Trenton Bostaph Guest Star Bailey Chase David Lang Guest Star Jeremy Isaiah Earl Carl 'Blue' Johnson Guest Star Dick Wolf Executive Producer Matt Olmstead Executive Producer Michael Brandt Executive Producer Derek Haas Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Joe Chappelle Executive Producer