TimeJumpers

Chase and Ava find themselves in King Arthur's castle, on a mission to save the King--and pursued by a strange man whom they first saw at the flea market.

On a visit to the Natural History Museum, Chase and Ava seem on the verge of finding out something important about the mysterious Randall, the missing scientist Finn, and the woman who gave them the suitcase filled with magical objects, when the dinosaur egg from the suitcase (they thought it was a potato) sends them back to dinosaur times--where they have to return the egg to the correct brontosaurus nest, while eluding hungry dinosaurs, and Randall, who it turns out is working for somebody called The Collector.

"Chase and Ava are ready for their next adventure! They touch the flashing cube inside their magic suitcase, and they're sent spinning forward in time to the future! There, they find robots and gliding cars. But bad guy Randall is there, too--and he is after them! Chase and Ava will need to act fact to put the cube back where it belongs"--Publisher.

"Chase and Ava are ready for their next adventure! They touch the flashing cube inside their magic suitcase, and they're sent spinning forward in time to the future! There, they find robots and gliding cars. But bad guy Randall is there, too--and he is after them! Chase and Ava will need to act fact to put the cube back where it belongs"--Publisher.

Ava and Chase want some more information before they embark on another adventure in time, but the woman who gave them the suitcase filled with magical objects is not being helpful, and when Chase picks up the scarab of King Tutankamun they find themselves transported not to ancient Egypt, but to Egypt on the day King Tut's tomb is discovered--and they must get the artefact back into the tomb while avoiding Randall who has arrived before them.

"At the flea market nine-and-a-half-year-old Chase and his younger sister Ava acquire an old suitcase filled with rows of carefully packed strange objects, and when they handle one of the objects (a dragon-headed doorknob) they find themselves in King Arthur's castle, on a mission to save the King--and pursued by a strange man whom they first saw at the flea market, who is after their suitcase"--Provided by publisher.

"At the flea market nine-and-a-half-year-old Chase and his younger sister Ava acquire an old suitcase filled with rows of carefully packed strange objects, and when they handle one of the objects (a dragon-headed doorknob) they find themselves in King Arthur's castle, on a mission to save the King--and pursued by a strange man whom they first saw at the flea market, who is after their suitcase"--Provided by publisher.

Teenagers Genevieve Corrigan and Jules Santorini "TimeJump" to the year 15,000,000,072 to correct problems being caused by the not-so-trustworthy head of TimeMaster Corporation, Quincy Carter One.

With Quincy Carter One on the loose somewhere in time, "TimeJumping" supposedly not safe anymore, and history starting to "Unhappen," Jules and Gen are once again called upon to help correct the past.

A defective time-jumping device strands Theodore, a teen from the distant future, in the twenty-first century, where he is helped by Jules, who has his own time problems, and Gen, an old friend.