Guest Stars Boris Kodjoe as Dr. Will Campbell Jillian Murray as Dr. Heather Pinkney Tommy Dewey as Dr. Mike Leighton Jeff Hephner as Dr. Edward Harbert Meagan Good as Dr. Grace Adams Sprague Grayden as Leslie Garcia Cameron Boyce as Brody Elisha Henig as Luke Barton Christopher Gartin as Robert Stein Dave Power as Craig James Myndy Crist as Susan Stein Co Starring Angela Relucio as Nurse Risa Park Emily Nelson as Hannah Reynolds Thai Douglas as Sheriff Theo Breaux as Medic #4 Haley Brooke Walker as Roseline Beauvau Juan Monsalvez as Event Medic Corey Mendell Parker as Officer Combs Craig Welzbacher as Ben Barton Aris Mendoza as Medic #3 Amy Shelton-White as Medic #1 Monica Lawson as Pediatric Nurse Dru Mouser as Sandy Johnny Kostrey as Medic #2 Shannon McClung as Axe Man