"Jack and Annie are whisked back in time by the magic tree house to meet Benjamin Franklin in Old Philadelphia"--

When he is magically transported back to the seventh grade before he and his best friend had a falling out, science nerd Mason gets a chance to stop the chain of events that made his previous life implode.

After learning that he has been sent from the future for a special purpose, eighteen-year-old Jack receives help from an unusual dog and a shape-shifting female fighter.

With the aid of Bartleby, an enormous Tower of London guard known as a Beefeater, Nathan travels through time to stop his father from changing the past.

When eleven-year-old Olive and her distracted parents move into an old Victorian mansion, Olive finds herself ensnared in a dark plan involving some mysterious paintings, a trapped and angry nine-year-old boy, and three talking cats.

After his mother dies, Wade Jackson cannot decide whether to become a musician or a scholar, so he does both--splitting his consciousness into two distinct worlds.

It's the hottest adventure yet! When Patrick takes a trip alone in the Imagination Station for science project research, things get a little explosive. First, his cousin Beth gets angry that she was left behind. Second, Eugene Meltsner sees red when he realizes that Patrick went to Pompeii in 79 A.D. a day before Mount Vesuvius erupts! It doesn't help that the Imagination Station is on the blink and Whit has gone missing.As Beth and Eugene frantically...

Jonah was able to save all of time from collapsing but in doing so gained a twin brother, Jordan, who must learn what has happened and do his own part to save time--and his parents.

Cantor, Bixby, and Dukmee must band together to find the storied realm walker Chomountain after the devastating attack by the corrupt Realm Walkers Guild; however, the great wizard is not as he once was--

In the mid-1950s, Yggdrasil Birnbaum and her friends, Seamus and Neddie, journey to Old New Hackensack, which is on another plane, to try to learn why ghosts are disappearing from the Birnbaum's hotel and other Hollywood, California, locations.