Hidden passages have a long history of appearing in fictional novels and films but an even richer past in reality dating back to Egyptian tombs passages for Christians to worship in hiding from Romans. Over the years hidden passages have been used to arrest kings and evacuate popes, hide shogun warriors, facilitate guerrilla fighters, enable drug smugglers and conceal serial killers. In recent times, however, many more modest individuals have created (or discovered) secret passages in ordinar

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