Magic Tree House® Merlin Missions #27: Night of the Ninth Dragon by Mary Pope Osborne (Paperback) | Scholastic Book Clubs,Magic Tree House Merlin Mission (27 book series) Paperback Edition,Magic Tree House (R) Merlin Mission Night of the Ninth Dragon, Book 27, (Paperback),Amazon.com: Magic Tree House Merlin Missions Books 1-4 Boxed Set: 9781524770532: Osborne, Mary Pope: Books,Magic Tree House ,