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

Jack and Annie are transported to King Arthur's realm, where invisible beings, ravens, and spells have a castle in an uproar.

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

In their magic treehouse, Jack and Annie are again transported to King Arthur's realm, where invisible beings, giant ravens, and mistaken magic spells have a du

Travel with Jack and Annie to the deep, dark ocean to encounter the stealthiest of underwater predators: the shark! Jack and Annie are going on vacation! Or so