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 Haley Seda Isabella Muniz Guest Star Samuel Hunt Greg Gerwitz Guest Star Joe Minoso Joe Cruz Guest Star Markie Post Barbara 'Bunny' Fletcher Guest Star Kevin J. O'Connor Commander Fischer Guest Star Rinska Carrasco Valerie Muniz Guest Star Anton Bassey Kenny Reevis Guest Star Shane Kenyon Sam Carden Guest Star James Sharpe Graham Norcross Guest Star Mark Forrest Chief George Baumgartner Guest Star Doug James Father McClosky 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