with the stronghold getting destroyed, and Amy and Dan finding a mysterious cloth with letter Ms in a pattern, indicating that it must have been the Madrigals. Clue Clue: 1/2 a gram of myrrh Location: Russia References External links Scholastic 39 Clues books page The 39 Clues novels 2009 American novels Collaborative fiction Sequel novels Novels set in Egypt 2009 children's books