One summer day in Frog Creek, Pennsylvania, a mysterious tree house appeared in the woods.

Eight-year-old Jack and his seven-year-old sister, Annie, climbed into the tree house. They found that it was filled with books.

Jack and Annie soon discovered that the tree house was magic. It could take them to the places in the books. All they had to do was point to a picture and wish to go there. While they are gone, no time at all passes in Frog Creek.

Along the way, Jack and Annie discovered that the tree house belongs to Morgan le Fay. Morgan is a magical librarian of Camelot, the long-ago kingdom of King Arthur. She travels through time and space, gathering books.

Jack and Annie have many exciting adventures helping Morgan and exploring different times and places. In Magic Tree House Books #25–28, they learn the art of magic.…