|Author(s) :- Mary Pope Osborne||Format :- Paperback|
|Publisher :- Random House Children's Publishers UK||Pub. Date :- 2009-01-01|
|ISBN-13 :- 9781862305731|
|Series:- Magic Tree House|
|Dimensions :- 195 x 130 x 5|
|Weight :- 64|
After 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.