Eric Stanley

as Dr. Ames (uncredited)

as Shields

as Mr. Nelson

as Col. Whitcomb

as Hubert Kingery (Uncredited)

as Captain Donald McDonald

as Ritter

as Mr. Lane

as General Ross

as Bentley

as David Dow Harriman

as Tom Hardwicke

as Dr. Martin

as Sir George, Medical Council Prosecutor

as Sir Francis

as Valdez

as Commissioner