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 Josh Segarra Justin Voight Guest Star Barbara Eve Harris Emma Crowley Guest Star S. Epatha Merkerson Sharon Goodwin Guest Star Marlyne Barrett Maggie Lockwood Guest Star Samuel Hunt Greg Gerwitz Guest Star Joseph Sikora Kevin Bingham Guest Star Caroline Neff Olive Morgan Voight Guest Star Tim Gooch Roger Simpson Guest Star Ronald L. Conner Chief Chet Harper 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