as Dr. Bert Dilling
as Baron de la Ma de la Toulon (uncredited)
as Sergeant (uncredited)
as Sir William Drayton
as Cyril
as Dr. Carthwright
as Maj. MacStreet
as Sir Edgar Whipsnade
as Lt. Meyerdorf
as Roy Lucas
as Compton - Cynthia's First Man (uncredited)
as Clayton Palmer
as Calender
