When a mysterious note invites them to Camelot, Jack and Annie travel in the magic tree house to the magical kingdom where they must find a lost dragon.
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  1. Night of the Ninth Dragon by Mary Pope Osborne (Random House, July 2016) [print · e-book].
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Mary Pope Osborne