Paperback, 188 pages
English language
Published April 12, 1969 by Knight Books.
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Bleak and eerie, Mystery Moor is well known for its spooky atmosphere, but is there something really scary out there? The Famous Five are intrigued, but the unfriendly travellers camped on the moor aren't letting on. The gang risks treacherous conditions to follow them over the moor -- but what danger will they find at the end of their trail?