One False Note
One False Note is the second book in "The 39 Clues" series. It is written by Gordan Korman, and was published by Scholastic on December 2, 2008. Following 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. "One False Note" entered the Children's Books New York Times Best Seller list at number one on December 21, 2008 and stayed on the list for children's chapter books for 12 weeks.
List of The 39 Clues characters
Ned, Ted, and Sinead Starling (all from Oak Bluffs, Massachusetts) are the most surprising team in the quest. Ned, Ted, and Sinead are commonly seen in their preppy clothes. In the first book, while at the Franklin Institute, an explosion occurs that severely hurts them, and put them out of the clue hunt for almost a month. After recovery, they were grounded by their parents thus, they cannot continue on their quest. However, they found medical procedures to speed up healing for their injuries, but still leaving Ned with recurring and painful headaches and Ted almost completely blind. They have read up on the hunt during their hospital days to keep up with the other teams, and even stole one of Bae Oh's Clues. Sinead has become very protective of her brothers since their incident and made it her goal to use the master serum to cure them. They are all Ekats. In the 4th book of the second series, it was revealed that Sinead was Vesper 3, the mole, but later in Day of Doom she returns to the Cahills after realizing that she harmed her own family and that Vesper One will kill all the hostages, including Ted. They do not have any respective cards, although Sinead Starling appears in the card 303: magnifying glass and the card 284: Vesper Mole