The Doctor arrives just in time to lend a helping hand to a survey team of scientists drilling beneath the Moon's surface to discover the cause of an unusual power source. The adventure continues with deadly lunar dust and a Crystal that has been lost for centuries...Unfortunately it's just what the Darksmiths have been looking for and they have despatched an Agent to recover it. At any cost.
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Book Description BBC Childrens Books, 2009. Paperback. Book Condition: New. Never used!. Bookseller Inventory # P111405905131