Osborne M.: Dinosaurs Before Dark. Book 1

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!

Where did the tree house come from?

Before Jack and Annie can find out, the mysterious tree house whisks them to the prehistoric past. Now they have to figure out how to get home. Can they do it before dark...or will they become a dinosaurs dinner?

Did you know that theres a Magic Tree House book for every kid?

Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books

Merlin Missions: More challenging adventures for the experienced reader

Super Edition: A longer and more dangerous adventure

Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures