John Sutton

as Insp. Beecham

as Captain of the Guard

as The Duke of Buckingham

as Dr. Rivers

as Dr. Frank Griffin

as Warner, the Chauffeur

as Capt. Armand of the Queen's Guard (uncredited)

as Ira

as John Wyatt

as Ambrose Ashley

as Adjutant

as Keith Ferris

as Diego De Silva

as Lord Donegall

as Wing Commander Morley

as Anthony Tunliffe

as The Actor as 'Tom' in Stage Play

as Cecil Graham

as Richard Jeffery

as Ship's Passenger (uncredited)

as Doctor

as Corporal Piggott

as Fred Haviland

as Sanger

as Inspector Tredennis

as Inspector Tredennis

as Hilary Evans

as Raizul

as Drake

as Nielson's Secretary

as Lord Edward Crewe

as Hessian Courier (uncredited)

as Rene Champion

as Harvey Bristol

as Captain Luis del Toro

as Harry

as Peter Stackhouse

as Howard Shelton

as Roger Hetherton

as Geoffrey Carter

as Khalid

as Daniel Catlin

as Tom Wickers

as Jerry Allison

as Prince Bisceglie

as Jeff MacAllister

as Man at Newsstand (uncredited)

as Phil Dexter

as Count de Brissac

as English Officer

as Superintendent Walker

as Fred Percy

as Peter Halliday

as Ted Whitney

as Bill Banning

as Boston

as Dr. Franklin Meredith

as David Wallace

as Dr. Phillip Rossiter

as Young Man

as Duke de Valdac

as The Amazon Trader

as Shaw

as Tom Wickers

as Herbert Guiles