Will Osborne

Otto and Leni thought they were safe: They escaped, barely, from war-torn Europe and are living as refugees in England. But now, the Crown has recruited them: Great Britian wants them to go back. As spies! Dropped behind enemy lines, they embark on a top-secret operation. Code name: Wolfsangel. Their mission? Capture the one person who can defeat the ultimate evil of Nazism! Der Fuhrer has destroyed Otto's and Leni's families, but what if the tables...

A retelling of the Grimm tale featuring a handsome prince who is put into a deep sleep by a curse until he is awakened by the kiss of a brave princess.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better.  Track the facts with Jack and Annie!!
 
When Jack and Annie got back from their adventure in Magic Tree House #5: Afternoon on the Amazon, they had lots of questions. How much rain falls in a rain forest? What is the world's heaviest...

Describes the changing nature of weather and how meteorologists predict and study such storms as tornadoes, hurricanes, and blizzards.

Jack and Annie look at knights, armor, and life in a castle.

Explores the history of the steamship Titanic, from Thomas Andrews' plans for "the safest ship on the ocean" to the lingering questions concerning its disastrous maiden voyage in 1912.

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better.  Track the facts with Jack and Annie!!
 
When Jack and Annie got back from their adventure in Magic Tree House #3: Mummies in the Morning, they had lots of questions. Why did people make mummies? What was the mysterious writing...

Read the adventure and track the facts—it's two great ebooks in one!
 
Join Jack and Annie as they travel to the time of dinosaurs in Magic Tree House® #1: Dinosaurs Before Dark. Then uncover the facts behind the fiction in Magic Tree House® Fact Tracker: Dinosaurs. It’s two favorite ebooks in one! Find out why Mary Pope Osborne’s #1 New York Times bestselling series is...

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better.
Track the facts with Jack and Annie!
 
When Jack and Annie got back from their adventure in Magic Tree House #8: Midnight on the Moon, they had lots of questions. How did the universe begin? How long does it take to get to the moon?...

Read the adventure and track the facts—it's two great ebooks in one!
 
Join Jack and Annie as they travel to ancient Egypt in Magic Tree House® #3: Mummies in the Morning. Then uncover the facts behind the fiction in Magic Tree House® Fact Tracker: Mummies. It’s two favorite ebooks in one! Find out why Mary Pope Osborne’s #1 New York Times bestselling series is such a hit...