Found: The Hidden Message in a 1676 Letter Allegedly Dictated by the Devil

In 1676, Sister Maria Crocifissa della Concezione had an infernal conversation with the Devil. When she came to her senses, the nun, who lived at a convent in Palma di Montechiaro in Sicily, found she had written letters in an indecipherable language. She and her sisters believed the letters were the work of Satan, who had tried to turn her away from God.

One of the letters survived, but more than three centuries later, its contents were still a mystery. But in August, the LUDUM science museum in Sicily obtained a copy of it and subjected it to a more modern analysis, using intelligence-grade code-breaking software…

Full Article: http://www.atlasobscura.com/articles/found-hidden-message-letter-dictated-devil-nun-17th-century