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 Oliver Platt Daniel Charles Guest Star Torrey DeVitto Natalie Manning Guest Star Samuel Hunt Greg Gerwitz Guest Star Jeremy Shamos Dr. Dean Reybold Guest Star Maureen Sebastian ASA Dana Shelby Guest Star Brenda Strong Attorney Green Guest Star Keith D. Gallagher Denny Gibson Guest Star Ed Flynn Detective Lawrence Stark Guest Star John Mossman Judge 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