Follow a brand new, musical adventure of Enid Blyton's intrepid Famous Five as they come up against a dastardly spy, bumbling crooks, deserted cottages and secret passages. Central to the plot is the secret formula devised by the hapless Uncle Quentin and a horde of smugglers' gold. Filmed during the nationwide tour of the acclaimed musical.

Jack Frost is a gritty, dogged and unconventional detective with sympathy for the underdog and an instinct for moral justice who attracts trouble like a magnet. Despite some animosity with his superintendent, Norman “Horn-rimmed Harry” Mullett, Frost and his ever-changing roster of assistants manage to solve cases via his clever mind, good heart, and cool touch.