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 Christian Stolte Randall McHolland Guest Star David Eigenberg Christopher Herrmann Guest Star Mark Allan Stewart James Beckett Guest Star Madison McLaughlin Michelle Sovana Guest Star Jon Sklaroff Schultz Guest Star Melissa Carlson Meredith Olinsky Guest Star Caroline Neff Olive Morgan Guest Star Shane Woodson Nathan Whitcomb Guest Star Christopher Meister Larry Klamp 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