Special Guest Stars Chris O'Donnell as Finn Dandridge Guest Stars Sara Ramírez as Dr. Calliope "Callie" Torres Jeffrey Dean Morgan as Denny Duquette Frances Fisher as Betty Johnson John Cho as Marshall Stone Gabriel Tigerman as Noah Reynolds Sarah Lafleur as Melanie Reynolds Graham Beckel as Jim Johnson Co Starring Ray Ford as Paramedic Ray Sutera John O'Brien as Lab Tech Jeffrey Maria Elena Maglaris as Nurse Maria Maile Flanagan as Tech Wayne Lopez as Paramedic #2 P.D. Mani as Anesthesiologist