Titles in This Set:1. Valley of the Dinosaurs2. Castle of Mystery3. Secret of the Pyramid4. Pirates' Treasure!5. Night of the Ninjas6. Adventure on the Amazon7. Mammoth to the Rescue8. Moon Mission9. Diving with Dolphins10. A Wild West Ride11. Lions on the Loose12. Icy Escape13. Racing with Gladiators14. Palace of the Dragon King15. Voyage of the Vikings16. Olympic ChallengeDescription:Valley of the DinosaursJack and Annie get more than they had bargined for when Jack opens a book about dinosaurs and wishes he could see them for real. They end up in prehistoric times with Pteranodons, Triceratops and a huge Tyrannosaurus Rex! How will they get home again? The race is on . . . !Castle of MysteryJack and Annie find themselves on another adventure - this time they're in medieval England. It's exactly the same as the story book - there's a castle and a banquet and knights on horseback. But when they find themselves locked in a dungeon, Jack starts to wonder if they'll ever get home again . . .Secret of the PyramidWhen they're whisked away to ancient Egypt in the tree house, Jack and Annie learn how to read hieroglyphics with the help the ghostly Queen of the Nile.But secret codes aren't the only puzzle they have to solve. How do they get out of the pyramid full of mummies? And there's still the problem of who all these magical books belong to. Who is this mysterious M?Pirates' Treasure!Jack and Annie are in a treasure trove full of trouble!Stuck on a desert island, captured by the evil Captain Bones and his gang and a huge storm at sea . . . For a while, it looks like they might not get home safely after all. And they discover that their adventures are even more magical than they had first thought . . .Night of the NinjasMorgan le Fay - the owner of the Magic Tree House and all its mysterious books is missing and needs Jack and Annie's help! They follow her clues to Japan where they find themselves in the middle of a feud between Japanese ninja warriors and Samurai warlords. Will Jack and Annie find the tree house again? Or will they be caught up in a terrifying battle?Adventure on the AmazonThe tree house takes Jack and Annie to the most beautiful place they've ever seen. But they're very high up in the trees of the Amazon Rainforest! Getting down is just the first of their adventures. Lost on the Amazon river, they have to face piranhas, snakes and even a crocodile! Will they be stuck in the rainforest for ever?Mammoth to the RescueJack and Annie travel back in time, wearing only their swimsuits! When the tree house lands in the freezing Ice Age, they have to hide from hunters and escape from a great cave bear. But when Jack and Annie are chased by a fierce sabretooth tiger and fall into a hunting trap, they're really stuck. Will anybody come to their rescue?Moon MissionJack and Annie are whisked into the future - to an exciting outer-space hotel! But they've only got two hours before they run out of air . . . Will the mysterious moon man and his map help them get back safely?Diving with DolphinsAfter a break from their trips in the tree house, Jack and Annie are delighted to find that it's back! Morgan le Fay needs their help, but they'll have to become Master Librarians first, and that means solving four riddles. For the first one, Morgan sends them deep into the middle of the ocean. Jack and Annie ride in a mini-sub and meet jellyfish, sea horses and an octopus. But there are some scary sharks in the deep and the friendly dolphins have to come to the rescue. . . A Wild West RideThe tree house lands in Wild West America but there's no one around. Has it landed in a ghost town?When a gang of nasty horse thieves gallop past, it's not long before Jack and Annie are swept up in another adventure. With their new cowboy friend, Slim, they set out across the prairie to rescue Slim's mare from the horse thieves. But Jack and Annie still have their next riddl