The magic tree house takes Jack and Annie to a moon base in the future where they continue to search for the fourth thing they need to free their friend Morgan from the magician's spell.

A tree house that travels through time? Not possible, says Jack. But he has to admit--when he and his younger sister, Annie, start running into dinosaurs--that they're not in Frog Creek, Pennsylvania, anymore. 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 fifteen-year-old Murry twins, Sandy and Dennys, are accidentally sent back to a strange Biblical time period, in which mythical beasts roam the desert and a man named Noah is building a boat in preparation for a great flood.

#18 The magic tree house takes Jack and his sister Annie to the Great Plains, where they learn about the life of the Lakota Indians.

The year is 1945. Claire Randall, a former combat nurse, is back from the war and reunited with her husband on a second honeymoon--when she innocently touches a boulder in one of the ancient stone circles that dot the British Isles. Suddenly she is a Sassenach--an "outlander"--in a Scotland torn by war and raiding border clans in the year of Our Lord... 1743. Hurled back in time by forces she cannot understand, Claire is catapulted into the intrigues...

Polly's stay with her grandparents in Connecticut becomes an extraordinary experience as she encounters old friends and mysterious strangers and finds herself traveling back in time to play a crucial role in a prehistoric confrontation.

Mitch Albom's exceptional work of fiction, the inventor of the world's first clock is punished for trying to measure God's greatest gift. He is banished to a cave for centuries and forced to listen to the voices of all who come after him seeking more days, more years. Eventually, with his soul nearly broken, Father Time is granted his freedom, along with a magical hourglass and a mission: a chance to redeem himself by teaching two earthly people...

No girls allowed at the Olympic games! That's the rule when the Magic Tree House whisks Jack and Annie back to ancient Greece. But when Annie tells Jack to go to the games without her, he knows she's up to something. Will Annie find a way to see the games? Or will she get herself - and Jack - into Olympic-size trouble?

One minute they're looking at pictures of knights in the book, a birthday gift from Joe's magician uncle, the next minute they're battling fire-breathing dragons. Will Joe, Fred, and Sam escape death?

In their magic treehouse, Jack and Annie are again transported to King Arthur's realm, where invisible beings, giant ravens, and mistaken magic spells have a duke's castle in an uproar on Halloween night.