When Roger first looked up at the tree house, he thought he saw something moving at the window. No one should be there -- the tree house belonged to the Mayfairs. It was in the deep woods that surrounded their new house in the country. Still, strange things happened each time Roger and his sister, Anabelle, tried to explore the tree house. Once Roger heard mysterious noises. Another time they found odd-shaped footprints. What was the secret the tree house was hiding?

Four brave siblings were searching for a home – and found a life of adventure! Join the Boxcar Children as they investigate the mystery of a secret window in this illustrated chapter book series beloved by generations of readers. A family moves into the house next door! The Boxcar Children decide to make friends with their new neighbors by building a tree house with them. In the process, they notice a window in their neighbor's house that nobody knows about. Does the old home have a secret? What started as a single story about the Alden Children has delighted readers for generations and sold more than 80 million books worldwide. Featuring timeless adventures, mystery, and suspense, The Boxcar Children® series continues to inspire children to learn, question, imagine, and grow.

Books 17–20 of the New York Times bestselling Magic Tree House series boxed together for the first time! These four titles are the perfect gift for a Magic Tree House fan or any child who loves a good adventure. Parents, teachers, and librarians hail the chapter-book series as a tool to promote reading, as even the most reluctant readers want to know where the Magic Tree House will take the brother-and-sister team next. In books 17–20, Morgan le Fay, the magical librarian of Camelot, asks Jack and Annie to find the four things that will free an enchanted dog named Teddy from a spell. Their quest leads them to a ship lost at sea, the Great Plains, the forests of India, and the Australian Outback. It's a difficult and dangerous mission, but Jack and Annie will do anything to help their new friend, Teddy! Books in this set include: Tonight on the Titanic (#17), Buffalo Before Breakfast (#18),Tigers at Twilight (#19), and Dingoes at Dinnertime (#20). Don't miss all the fun things you can do and discover at MagicTreeHouse.com!

The adventures that started it all! Newly bound together, the first four books of the fan-favorite chapter-book series are the perfect introduction to the New York Times bestselling Magic Tree House series. Parents, teachers, and librarians hail the series as a tool to promote reading, as even the most reluctant readers want to know where the Magic Tree House will take the brother-and-sister team next. The story begins with Dinosaurs Before Dark, when Jack and Annie discover a mysterious tree house filled with books and a trip back to the time of the dinosaurs follows. In The Knight at Dawn, Jack and Annie are in the Great Hall of a castle; a feast is under way, but they aren't exactly welcome guests. When the tree house whisks them back to ancient Egypt in Mummies in the Morning, Jack and Annie must help a long-dead queen solve a puzzle. And in Pirates Past Noon, Jack and Annie find a secret map that leads to buried treasure and ruthless pirates! Mary Pope Osborne brings together just the right combination of history, magic, and fast-paced adventure to satisfy kids, parents, teachers, and librarians all over the world with her New York Times bestselling series.

Eight-year-old Jack and his younger sister Annie find a magic treehouse, which whisks them back to an ancient time zone where they see live dinosaurs.

The Walnut Street Detectives prove their worth to the neighborhood when they help foil a robbery.

A rainy day gets Bill Collins thinking, "What the Gang needs is a tree house!" So with Poetry's family's old lawn umbrella and some elaborate thatch work, the boys create their own headquarters down by the river. Soon they discover that someone's living in their tree house! And when their guests turns out to be an African American man, prejudice rears it's ugly head within the Gang. Join the Sugar Creek Gang as they learn that the value of people has nothing to do with their skin color.