Miles Mander

as Lord Warrick

as Dr. Marko

as Mr. Rogan

as Frederick Malone

as British Secretary

as Chief Inspector W.R. Allison

as Sir Robert Bentley

as Mr. Brigstock

as Over the Shoulder Reader

as Leuwen Grayle

as Giles Conover

as Charles Seagrave

as Judge Brisson

as Major Loring (uncredited)

as Weatherby (uncredited)

as Colonel Fitzhume (uncredited)

as Pleyel

as Sir Frederick Fleet

as Businessman (uncredited)

as Col. Herman Fournier

as Dr. Wilton

as German Agent on Radio (voice) (uncredited)

as Portmaster

as Major Cunningham

as Kilpatrick

as Floyd Kirsten

as Professor Langer

as Major

as Dr. Kurt Immelman

as James V. Thorne

as Dr. Leonard V. Meecham

as Paul Panois

as Lord Keith

as Dr. Lockberg

as Tom Armitage

as Doctor (uncredited)

as Sir Malcolm Drake (uncredited)

as Attorney General (uncredited)

as Mr. Charles Pryor

as Homer

as Dr. Rankin

as Roger Smythe

as Deacon Arnold Foster

as Lieut. Strope

as Lockwood

as King Henry VI

as Lord Wickham

as Horace Granville

as Aramis

as Sir John Gresham

as Cardinal Richelieu

as Fred Thomas

as Ebenezer Balfour

as Benjamin Disraeli

as The Sparkler

as James Stratton

as Corey

as Jukes

as King Louis XIII

as Garry Ames

as Bert

as Felze

as Wriothesley

as Harley Travers

as Capt. Ronald Dancy, DSO

as Captain Auguste Lutte

as Claude Holford

as Ambatriadi

as Harry Tresham

as Gordon Moore

as Guy Merrow

as Gordon Druce

as Raymond Carteret

as Adolf Sperber

as Capt. Gardner

as Armand de Marny

as Mr. Borwick

as Sir Hugo Boycott

as Sir James Daring

as Rollo Stevens

as Hon Gerald Pillick

as Sir Neville Moreton

as Levett

as Godfrey Norton