Wendy Mass

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 themselvestransported not to ancient Egypt, but to Egypt on the day King Tut's tomb is discovered--and they must get the artifact back into the tomb while avoiding Randall who has arrived before them.

This time a strange flashing cube from the magic suitcase sends them to a nearby city, Hadenstown, in the future, and they find themselves surrounded by flying cars, tall glass buildings, and robots; but Randall is also there, and the two children must scramble to figure out just what the mysterious cube is and get it back where it belongs--and their quest brings Chase face-to-face with his future self, Professor Teslar.

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,...

"Eight-year-old Archie Morningstar, his father, and the talking cat Pockets travel to Akbar's Floating Rest Stop, where Pockets is going to receive an award for bravery. But when all the tuna fish (Pockets's favorite food) goes missing, they must discoverwho is behind the nefarious plot"--

"With her life recently turned upside down, 12-year-old Addie is uncomfortable in her own skin until the world of virtual reality sparks her imagination and leads to an exciting new project, a new friend, and to reconnecting with who she's always been"--