

In Vienna, Amy and Dan discover that Mozart had an older sister: Maria Anna "Nannerl" Mozart. It is written by Gordan Korman, and was published on December 2, 2008.įollowing the events of The Maze of Bones, the protagonists Amy and Dan Cahill learn about Mozart and travel to Vienna, Austria to search for the second clue in the 39 Clues competition.ĭan, Amy, and their au pair Nellie, found music by Wolfgang Amadeus Mozart in the end of The Maze of Bones, leading them to Vienna, Austria, to learn about him and find a related clue. One False Note is the second book in The 39 Clues series. One False Note (The 39 Clues #2), Gordon Korman
