Oliver Platt Dr. Daniel Charles Actor S. Epatha Merkerson Sharon Goodwin Actor Nick Gehlfuss Dr. Will Halstead Actor Yaya DaCosta Nurse April Sexton Actor Colin Donnell Dr. Connor Rhodes Actor Brian Tee Dr. Ethan Choi Actor Torrey DeVitto Dr. Natalie Manning Actor Rachel DiPillo Dr. Sarah Reese Actor Iymen Chehade Prince Faisal Guest Star Gregg Henry Dr. David Downey Guest Star Peter Mark Kendall Joey Thomas Guest Star Julie Marie Berman Dr. Sam Zanetti Guest Star Marlyne Barrett Maggie Lockwood Guest Star Cynthia Addai-Robinson Dr. Vicki Glass Guest Star Matthew Humphreys Henry Joffe Guest Star Laurence Mason Chief Mason Guest Star Margaret Cook Amy Guest Star Maisie Merlock Michelle Joffe Guest Star Jeremy Shouldis Dr. Marty Peterson Guest Star Peter DeFaria Officer Tackett Guest Star Dick Wolf Executive Producer Matt Olmstead Executive Producer Michael Brandt Executive Producer Derek Haas Executive Producer Danielle Gelber Executive Producer Peter Jankowski Executive Producer Joe Chappelle Executive Producer