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 Nick Gehlfuss Will Halstead Guest Star Vincent Shuster Andrew Gibson Guest Star Madison McLaughlin Michelle Sovana Guest Star Barbara Eve Harris Emma Crowley Guest Star Samuel Hunt Greg Gerwitz Guest Star Leif Gantvoort Bergstrom Guest Star Joe Minoso Joe Cruz Guest Star Randy Flagler Capp Guest Star Erik Hellman Dr. Alec Willmate Guest Star Travis A. Knight Patrolman Bobby Price 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 Lin Oeding Director