Nina hears Victor pick up the old doll that she knocked over. It recites a riddle about a book of old, water of life, and tears of gold. She tells Fabian all about it and they agree to check out an abandoned library for the "book of old" that the riddle mentioned. When they do so later that day, they find Mr. Sweet and Victor already in there. They hide behind a bookshelf and hear them talking about the Book of Isis and where it might be hidden. Fabian knocks something off the shelf and the episode ends with Victor pulling the sheet off it, leaving him to find them. (thetvdb.com)