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 Dave Power as Craig James Elisha Henig as Luke Barton Myndy Crist as Susan Stein Christopher Gartin as Robert Stein Co Starring Angela Relucio as Nurse Risa Park Emily Nelson as Hannah Reynolds Thai Douglas as Sheriff Haley Brooke Walker as Roseline Beauvau Theo Breaux as Medic #4 Craig Welzbacher as Ben Barton Corey Mendell Parker as Officer Combs Aris Mendoza as Medic #3 Juan Monsalvez as Event Medic 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