Peter Dyneley

as Jeff Tracy (voice)

as Jeff Tracy (voice)

as Jeff Tracy (voice)

as Jeff Tracy / Professor Heinz Bodman (voice)

as Jeff Tracy / Commander Norman / Interceptor One Pilot (voice)

as Robert Hathaway

as Escalus, Prince of Verona

as Captain

as Lord St Erth

as Pat Tarley

as Julius K. Brayne

as Von Bulow

as David Garrick

as The Investigator (voice)

as Ezra Meade

as Balkov

as Col. Golchenko

as Jeff Tracy (voice)

as Col. Golchenko

as Lord Alistair Abdington

as Jeff Tracy (voice)

as German Officer #1

as Commander Charles Hastings

as Jeff Tracy (voice)

as Lord St. Erth

as Commander Charles Hastings

as Juan Braga

as Von Grauss

as Jeff Tracy/Commander Norman/Interceptor One Pilot (voice)

as Jeff Tracy

as Grantley Lewis

as Parrott

as Williams

as Narrator / Parisian Radio Operator (voice) (uncredited)

as Paul Verrier

as Nat Grendel

as Richard Eade

as Tony Gardner

as Inspector Slinn

as Lloyd Greener

as Mark Lemming

as Frank Ellinger

as Major Nichols

as Tom

as Commander Jenkins (uncredited)

as Len Hickman

as LeRoy

as Larry Stanford

as Dr. Morrow

as Hadley

as Willy Reichel

as Dr. Rene Normand

as Mr. Washington

as Baron Mauray

as Arthur Hayes

as Alec Beggs

as Major Moore

as Red Darrow

as Uncle George

as Midger

as Tony Roscoe

as Mark Tower

as Regan (uncredited)

as Miller

as Lady Anthea's Husband (uncredited)