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 Markie Post Barbara 'Bunny' Fletcher Guest Star Angelique Cabral Gina Gawronski Guest Star Stella Maeve Nadia Decotis Guest Star Michael Filipowich Nick Vosh Guest Star Kevin J. O'Connor Commander Fischer Guest Star Geoff Meed Jared Miko Guest Star Kara Zediker Sarah Normark Guest Star Randy Flagler Capp Guest Star Scott Benjaminson Johnny Douglas Guest Star Andrew Hawkes Tommy O'Neil 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