Noah Wyle Daniel Calder Actor Emayatzy Corinealdi Tia Young Actor Aliyah Royale Jira Calder-Brennan Actor Noel Fisher Paul Evans Actor Howard Charles Ethan Young Actor Elizabeth Laidlaw Victoria "Vic" Renna Actor Vinny Chhibber Liam Bhatt Actor Michael Patrick Thornton Jim Evans Actor Corey Reynolds Harrison Brennan Guest Star Glynn Turman Nathan Gordon Guest Star Enuka Okuma Suzanne Davis Guest Star Alano Miller Isaiah Guest Star J.J. Hawkins Riley Guest Star Enid Graham Amanda Guest Star Kristina Valada-Viars Elizabeth Fermi Guest Star Guy Van Swearingen Commander Redding Guest Star Maximus Chase Evans Benny Young Guest Star Rammel Chan Matthew Lee Guest Star Mitchell Fain Scoot Guest Star McKenzie Chinn Charisse Guest Star Amanda Powell Natalie Vaughn Guest Star Ilyssa Fradin Newscaster Guest Star Paul D'Addario White Guy Guest Star Melissa Davis White Girl Guest Star Jeffrey Fine Bailiff Guest Star Richard J. Lewis Young Harrison Brennan Guest Star Geoff Rice Miles Guest Star Kya Brickhouse Teen Tia Guest Star Rashada Dawan Resident 2 Guest Star Ava DuVernay Executive Producer Greg Berlanti Executive Producer Sarah Schechter Executive Producer Caitlin Parrish Writer Erica Weiss Writer Thomas Carter Director