Guest Stars Alisha Boe as Grace Clarke Marcus Giamatti as Artie Sneed Nancy De Mayo as FBI Agent Jessica Tuck as Dr. Giana Luca Colleen Foy as Paramedic Lauren Stamile as Dr. Colleen Marks Andrew Lukich as Mike Mullen Mark Atteberry as Male Doctor Craig Rhodes as Security Guard Natisha Anderson as Nurse # 1 Huntington Daly as Crash Team Nurse Shaan Sharma as Doctor # 2 Katie Roberts as Nurse # 2 Nathan Pelle as Thomas Knight Lucas Kwan Peterson as Young Male Nurse
