History, mystery, and magic!
Jack and Annie continue their quest for the secrets of happiness -- secrets they need if they're going to save Merlin. But when the magic tree house leads them to a tiny deserted island in the middle of the ocean, they're not sure who needs help more -- Merlin, or them! The two are soon rescued by a shipful of explorers and scientists. But the crew isn't looking for the secrets of happiness. The crew is looking for . . . a sea monster! Will Jack and Annie wind up in the monster's clutches?
Click on any of the links above to see more books like this one.