Deep under Sao Miguel island, rumoured to be the last emerging part of Atlantis, Professor Mortimer has discovered samples of a mysterious radioactive metal. Could it be the Atlanteans' legendary orichalcum?

Atlantis Mystery 2012, Cinebook Ltd, Canterbury

ISBN-13: 9781849181075

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Atlantis Mystery 1990, Catalan Communications

ISBN-13: 9780874160949

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