It has been two years since Joseph Harker first Walked between dimensions, met the alternate forms of himself, and formed a team to protect the Altiverse in the struggle between the vicious forces of magic and science--and now, injured, he has returned to his own dimension, bringing danger with him.

Each of the Travelers returns home to learn the truth about their origins before being reunited for a final, ineveitable confrontation with Saint Dane, whose efforts to control Halla are destroying its very foundations.

The magic tree house whisks Jack and Annie away to Australia where they must save some animals from a wildfire.

Tucker Feye and Lah Lia each hurtle through time, relating their stories in alternating viewpoints that converge at crucial moments.

Through an heirloom music box, Leo, a serious, responsible boy, and his badly-behaved cousin Mimi enter the magical world of Rondo to rescue Mimi's dog from a sorceress, who wishes to exchange him for the key that allows free travel between worlds.

When demons begin appearing on Earth unpredictably, foreshadowing a cataclysmic breakdown of their magic, Artemis and his friends face a new foe--a twelve-year-old girl whose intellect just might match Artemis's own--as they try to prevent catastrophe.

Jason and Rachel's adventures and friendships have made Lyrian more of a home to them than they could have imagined, so now, armed with the prophecy of a dying oracle, they are ready to become Lyrian's heroes whatever the cost to themselves.

Owen the Navigator is once again called on to marshall the Resistors and beat back the enemy Harsh in their attempt to take over time.

Irish teenager JJ Liddy discovers that time is leaking from his world into Tir na nOg, the land of the fairies, and when he attempts to stop the leak he finds out a lot about his family history, the music that he loves, and a crime his great-grandfather may or may not have committed.

Maddy slips into an alternate world called Marus where she helps Queen Annison protect the believers in the Unseen One from persecution. Maddy slips into an alternate world called Marus where she helps Queen Annison protect the believers in the Unseen One from persecution. "This was supposed to be a fairy tale, but it's turning into a nightmare!" Squeezing farther beneath the musty porch of her house, Maddy Nicholaivitch is sure she's found the perfect...