Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers--people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan's future self, warning them about an impending disaster that threatens them and everyone they know. Will they be able to set aside their past in order to save the future?--Amazon.com

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.

Seattle, 1913: Forced to wed a wealthy man, Dorothy runs away from the wedding. She meets a stranger and stows away on his peculiar craft-- to wake up in a chilling version of the world she left behind. New Seattle, 2077: Endless jumps through time have left Ash plagued by pre-memories of what is to come; the last thing he needs is a stowaway wearing a wedding gown. Dorothy may hold the key to unraveling the past-- but may spell Ash's ultimate destruction....

While backpacking solo in the desert, thirteen-year-old Mark falls into a tube of blue light and is transported into a more primitive world, where he must use his knowledge and skills to survive.

Forced to abandon Princess Elizabeth when Mary ascends the English throne, Rose sews elaborate gowns for Mary's upcoming coronation before violently escalating attacks on Protestants compel her to escape into her own time.

Using a mysterious wardrobe that allows them to travel through time, two eleven-year-olds, Federico a boy from the Italian Renaissance and Bee a girl from present-day New Jersey, work together to prevent the bickering between two great artists from changing the future.

Time travelers Jonah and Katherine arrive in 1611 to rescue missing child John Hudson, son of the explorer Henry Hudson, but just as the mutiny on the Discovery is supposed to start, Jonah and Katherine's knowledge of history is tested once again, and they fear that more is at stake than just one boy's life. Author's note includes facts about Henry Hudson's explorations.

Year: 2083. Location: London. It's the end of the world-- literally. Time travel is possible, but only forward. Only a handful of families choose to remain in the "now." Life is far from rosy for Juliet ("Jules"): the love of her life, Romeo, lies in a coma, and Jules is estranged from family and friends. Then a time traveler, Ellis, arrives from the future (an impossibility!) with a mission: wake Romeo-- and rewrite her future. -- adapted from jacket...

"Billy Chan is having the summer most twelve-year-olds dream about--bonding with his very own dragon and exploring the magical Dragon Realm! But the new world has not been without its perils as Billy and his friends have just barely escaped the clutches of the Dragon of Death and learned of a betrayal from someone they trusted. That betrayal leads to Billy's friend Dylan being kidnapped and taken through a time portal. Now Billy, Charlotte, and Ling-Fei...

Sixteen-year-old expert archer Merry Owen is desperate to save her family's farm in Wales, in the shadow of the Black Castle, and when she finds a buried chest containing an ancient and hopefully valuable Welsh text, she hopes it will be the key to a fortune--and so it is, but not in the way she expected, for it sends her and her friend James de Courcy into past.