as John Porter

as Elsworth Toohey

as Marchese Alessandro de Granazia

as Sir Hugh De Bracy

as Duque de Lorca

as Michael, Duke of Strelsau

as General

as Agamemnon

as Sir Christopher Hatton

as Uncle Morton Stearnes

as Jones

as Sir Alex Gordon (uncredited)

as Dr. Michaels

as Philip Cagle

as Alexander Narbonne

as Briefing Officer

as Lt. Michael Landers

as Sir Giles Amaury

as Dr. Edward Jeffreys

as John Flight

as John Tyson

as Benton

as Ken Blake

as Kit Woods

as Commander von Molter

as Gen. Benedict Arnold

as Edward Whymper

as Nigel Taplow

as Richard Marquess

as Col. von Broeck

as Col. James Parker

as Colonel Creighton

as Saint Ebenezer / Pulo Besar

as Aubrey Milburn

as Danzer

as Narrator (voice) (uncredited)

as Stanley Baldwin

as Lord Breethorpe

as Capt. Markham

as Allen Bardeman

as Godfrey Marvin

as Stephen Paradou

as Self

as Dick Summers

as Roger Howard

as Director

as Director