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.

Jack and Annie are transported by their magic tree house to the time of the Civil War where they meet Clara Barton.

Jack and Annie travel back to nineteenth-century Ireland to inspire a young Augusta Gregory to share her love of Irish legends and folktales with the world.

"When the magic tree house whisks Jack and Annie back in time, they land in the tallest tree in Yosemite, California where they join nature conservationist John Muir and US President Teddy Roosevelt on a historic trip through the woods."

Jack and Annie travel in their magic treehouse to the year 1621, where they celebrate the first Thanksgiving with the Pilgrims and Wampanoag Indians in the New Plymouth Colony.

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.

Back at Bloor's Academy after Christmas vacation, Charlie finds himself confronted with a new problem when young Henry Yewbeam, who vanished during a game of marbles in 1916, suddenly appears and needs help to find his family.

"The last thing Jacob Portman saw before the world went dark was a terrible, familiar face. Suddenly, he and Noor are back in his grandfather's house. Jacob doesn't know how they escaped from V's loop, but he does know one thing for certain: Caul has returned. Risen from the Library of Souls, Caul and his apocalyptic agenda seem unstoppable. Only one hope remains--deliver Noor to the meeting place of the seven prophesied ones, if they can decipher...

Their magic tree house takes Jack and Annie back to a monastery in medieval Ireland, where they try to retrieve a lost book while being menaced by Viking raiders.

Children's birthdays are always strange in Willow Falls, but when Connor's little sister Grace falls into a frozen state on her tenth birthday, Amanda and Leo must travel back in time to find out what force prevented Angelina from casting the blessing that would have protected her.