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The Friar and the Cipher: Roger Bacon and the Unsolved Mystery of the Most Unusual Manuscript in the World

By Lawrence and Nancy Goldstone

Doubleday, 320 pages, $26

This account of a mysterious manuscript–discovered in 1912 by book dealer Wilfrid Voynich and attributed by some to 13th Century scholar and friar Roger Bacon–is a fascinating tale of science, the Bible and code-breaking.