A young scientist, to the amazement and disbelief of his colleagues and other experts, has perfected a machine that lets him live one of mankind's oldest dreams--to live in times other than his own.

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

"Mason and Ty were once the very best of friends, like two nerdy sides of the same coin . . . until seventh grade, when Ava Petrakis came along. Now Mason can trace everything bad in his life to that terrible fight they had over the new girl. The one thing he'd give anything for is a do-over. But that can't happen in real life--can it? As a science kid, Mason knows do-overs are impossible, so he can't believe it when he wakes up from a freak accident...

When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to repair the fabric of time.

Two teenagers use H. G. Wells's famous time machine to race through time and stop a dangerous enemy.

Finding refuge in the greenhouse after her mother's death, Rose investigates a strange light only to find herself transported back in time where she becomes the servant and confidante of Henry VIII's daughter Elizabeth.

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

Jason and his magic cat Gareth travel through time to visit countries all over the world during different periods of history.

Charlie Bone hopes that the new term at Bloor's Academy will hold no unwelcome surprises. But then his distant relative Henry Yewbeam appears out of thin air, twisted through time from 1916 by Henry's wicked cousin, Ezekiel Bloor. Ezekiel, who is still alive, still nasty, and now ancient, vows to track Henry down and get rid of him once and for all. And with Charlie's scheming Yewbeam aunts also on the prowl, Henry desperately needs Charlie's help...

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.