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