Summary

Robert Langdon is tricked into coming to Washington DC by a mad man bent on recovering the ancient mysteries of the Masons. He kidnaps a friend lf Langdons, Peter Solomon and severs his hand to start Langdon on a series of puzzles to decode an ancient pyramid which contains a map to the ancient mysteries. He must decode this map in order to save Peter at the request of his kidnapper. Mal'akh the mad man also attacks Peter's sister Katherine over her research in Noetic science which is connected to the ancient mysteries and has proven the existence of the soul. Of course Langdon prevails and saves his friends as well as uncovers the secret of the ancient mysteries.