The magic treehouse 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.

Nicki and Snorri are trapped in Time, and Septimus Heap goes on a quest to find the House of Foryx, a place where all Time meets.

George and Harold are forced to contemplate a world without Captain Underpants.

Pulled through a glass that brings him back in time, Septimus Heap becomes the apprentice of an alchemist.

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.

Joe uses his ability to travel through time using vintage baseball cards to take his coach Flip with him to find out whether Satchel Paige really was the fastest pitcher ever.

The youngest of the Murry children must travel through time and space in a battle against an evil dictator who would destroy the entire universe.

"Dak, Sera, and Riq return to the United States and walk right into a deadly trap. The year is 1850 and the nation is divided over the issue of slavery. In these dark days, the Underground Railroad provides a light of hope, helping runaway slaves escape to freedom. But the SQ has taken control of the Underground Railroad from within. Now Dak and Sera are left wondering who to trust...while Riq risks everything to save the life of a young boy."--P....

It's a treasure trove of trouble! Jack and Annie are in for a high-seas adventure when the magic tree house whisks them back to the days of deserted islands, secret maps--and ruthless pirates! Will they discover a buried treasure? Or will they be forced to walk the plank? The magic treehouse whisks Jack and Annie back to the days of deserted islands, secret maps, hidden gold, and nasty pirates.

Dak, Sera and Riq might be in over their heads when they attempt to stop a Viking invasion!