Cryptic

Books can change the world. They can influence, entertain, transport, and enlighten. But across the centuries, authors have disguised their work with codes and ciphers, secret scripts and magical signs. What made these authors decide to keep their writings secret? What were they trying to hide? Garry J. Shaw tells the stories of nine puzzling European texts. Shaw explores the unknown alphabet of the nun Hildegard of Bingen; the enciphered manuscripts of the prank-loving physician Giovanni Fontana; and the angel communications of the polymath John Dee.