
When young reporter and amateur biker Jerry Marsh investigates a mysterious hooded figure on a motorbike, he discovers crooks hiding out in a ruined castle with atomic sabotage on their minds...

as Jerry Marsh

as Mary Plack

as Robert Plack

as Martin Bremner

as George Amble

as Mrs. Marsh

as Rakoff

as Karen

as Ted Lintott

as Geoff Morgan

as Mario

as Rackton

as Landlord

as Elderly Lady

as Holiday-Maker

as Holiday-Maker's Wife

as Holiday-Maker's Son

as Joyce

as Van Driver