Rendolepsis (2003)

After a young girl finds a mysterious book at the attic, she and her friend set off to learn more about the strange content. The trip leads both of them to Huelmes, where they meet a lot of odd people, each of them hiding something. The mystery becomes more and more dangerous, an the only clue the girls have, is this book, a key, and a definition of the word 'Rendolepsis'...