Eight-year-old Jack and his younger sister Annie use the magic treehouse to travel back to the Middle Ages, where they explore a castle and are helped by a mysterious knight.
- Publisher : Scholastic Inc.
- Publication Date : February 12, 2013
- Language : english
- Binding : Trade Paper
- Dimensions : 0 x 0 x 0 inches
- Pages : 66
- ISBN-13 : 9781338224122