Something had taken control of Sister Maria Crocifissa della Concezione’s body. She had no recollection of what she had done, but according to legend, when she woke up, she found a letter written in weird glyphs that she didn’t understand. But she claimed that an evil force had written it.
It took centuries to find a translation, but with the help of new code-cracking technology, a team of researchers was finally able to decipher the language used to write the letter, and they had to confront their own darkness to do it.