What was his evil mission?

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...

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Main Cast: Jimmy Hanley, Rona Anderson, Leslie Dwyer, Lionel Jeffries, Kenneth Connor, Beatrice Varley, Michael Golden, Valerie Hanson, Vincent Ball, Edwin Richfield

Director: Wolf Rilla

Writer: A.R. Rawlinson

Editor: John Trumper

Cinematographer: Geoffrey Faithfull

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