His Highness the Rangdo of Arg has arranged a particularly tricky set of problems for this week's explorers. How many
Argonds are lurking round the pond, and how are the explorers expected to get through the Crystal Mine when the anti-gravity boots are chained up? Tackling these and other puzzles this week are Ruth Madoc
Professor Heinz Wolff and Deborah Leigh Hall Residents of Arg:
Director OLIVER MACFARLANE Producers
CHRISTOPHER TANDY . IAN OLIVER