"Four British teens on vacation visit an island and discover that a terrorist group is using it as their headquarters."
Norman Bowler
as Bill Smugs
Wilfrid Brambell
as Uncle Jocelyn
Eleanor Summerfield
as Aunt Polly
Catherine Schell
as Alison Mannering
John Rhys-Davies
as Smith
Leon Lissek
as Jo
Paul Williamson
as M.I.5 Boss
Frank Williams
as Map Shop Owner
Peter Forbes-Robertson
as Mr. Roy
Julie Neesam
as Maggie
John Forbes-Robertson
Enid Blyton
Novel
Anthony Squire
Director
Gavin Bocquet
Set Dresser