character - Dr. Ames (uncredited)

character - Shields

character - Mr. Nelson

character - Col. Whitcomb

character - Hubert Kingery (Uncredited)

character - Captain Donald McDonald

character - Ritter

character - Mr. Lane

character - General Ross

character - Bentley

character - David Dow Harriman

character - Tom Hardwicke

character - Dr. Martin

character - Sir George, Medical Council Prosecutor

character - Sir Francis

character - Valdez

character - Commissioner