"As far as twelve-year-old McKinley O'Dair is concerned, the best thing about living in Gap Bend, Pennsylvania, is the Time Hop--the giant party the town throws every June to celebrate a single year in history. That one day is enough to make the few things that aren't so fantastic about McKinley's life--like her crabby homeroom teacher or her super-scheduled father--worth suffering through. And when McKinley learns that this year's theme is 1993,...

After accidentally traveling back in time and rewriting the future, twelve-year-old best friends Rahim and Kasia must work together to restore their timeline. Seventh grader Rahim Reynolds loves testing out the gadgets invented by his brilliant friend Kasia Collins. First there were the X-ray glasses and all the trouble they caused. Now there's the new cell phone she built for his birthday, even though his parents won't let him have one. But Rahim...

Sam Faulkner travels back in time to medieval Ireland, ancient Egypt and Renaissance Bruges in search of his missing father.

When Corey learns that he has the ability to save lives while time traveling, he is determined to go back in time to save his grandmother who died on September 11, 2001.

While seeking the seven magical coins that will allow him to reach his father, who is trapped in the castle of Vlad Tepes, Sam Faulkner travels to such places as ancient Delphi, a Stone Age cave, and 1930s Chicago.

When, in the process of testing his newest time machine, Professor von Volt accidently brings a triceratops, Helen of Troy, Attila the Hun, Charlemagne, and Christopher Columbus to present day New Mouse City, it is up to Geronimo and his friends to return them all to their own times and places--without being eaten by a T-Rex or skewered by Trojan warriors.

"A mysterious thief has stolen the ancient sword Cleo recovered in book one: Target practice, and she's determined to get it back. But her teachers at Yasiro Academy forbid her from risking her life, so she's stuck at school, trying to adjust to her newfound popularity and responsibility. And when she learns more about the prophecy that names her the savior of the galaxy, she must go on a dangerous journey to find the time tablets that could decide...

"The time has come for Cleo to fulfill the ancient prophecy that declares her a savior and a hero, a prophecy she still struggles to accept. Cleo is joined by old and new friends as they fight to defend the galaxy she's come to call home against the evil Xaius Octavian. The Queen of the Nile must summon the strength to face down her enemy one last time, and keep both her friends - and herself - alive."-- cover page 4.

"Life used to be great for Rose: full of friends, a loving mom, and a growing fashion blog. But when her mother dies in a car crash, Rose is sent away to live with a strange grandmother she hardly knows and forced to attend a new school where mean girls ridicule her at every turn. The only place Rose finds refuge is in her grandmother's greenhouse. But one night she sees a strange light glowing from within it. She goes to investigate, and finds herself...

After sixty years of trying to stop Paradox and set the universe right again, Finn time-travels to get help from his nine-year-old self.