"In The Secret Explorers and the Tomb Robbers, Gustavo (history expert) and Kiki (engineering expert) are sent the mission of stopping the Cairo Museum from closing down. They travel back in time to Ancient Egypt and are soon drawn into a tense, thrilling adventure that involves breaking into pyramids, learning ancient Egyptian hieroglyphics, and stopping thieves hoping to rob all the treasure from the Pharaoh's tomb"--Amazon.com

So far the AstroNuts have failed to find a suitable planet, but NNASA has come up with a new plan: send the four animal astronauts back through time on Earth where they are to contact early homo sapiens and somehow set them on a path to a sustainable future--trouble is, humans seem inferior to many of the other species (especially the wolves), so the AstroNuts come up with a Survival of the Fittest Olympics, hoping that with a little help the humans...

"A man awakes in a clearing in what appears to be medieval England with no memory of who he is, where he came from, or why he is there. Chased by a group from his own time, his sole hope for survival lies in regaining his missing memories, making allies among the locals, and perhaps even trusting in their superstitious boasts. His only help from the "real world" should have been a guidebook entitled The Frugal Wizard's Handbook for Surviving Medieval...

Professor von Volt plans to send Geronimo and his time traveling friends back to King Solomon's court to borrow a ring that supposedly will restore harmony to Mouse Island and balance the environment--but they soon find themselves taking an unplanned detour through Napoleon's court, a Viking village, and the Minotaur's labyrinth, before finally arriving before the wise King.

The regulars at the magical Café Funiculi Funicula are well acquainted with its famous legend and extraordinary time-travel offer. Many patrons have reunited with old flames, made amends with estranged family and visited loved ones. But the journey is not without risks, and there are rules to follow. In the tradition of Toshikazu Kawaguchi's sensational Before the Coffee Gets Cold Series, readers will once again be introduced to a new set of visitors:...

John Blake and his mysterious ship are doomed to sail between centuries and when he meets a shipwrecked girl named Serena he promises to help get her back to her time, but first they must stop the sinister and powerful Dahlberg Corporation.

Super Rabbit Boy gained his superpowers when, as a baby, he ate the magic carrot he found in the Wise Woods; now King Viking has built a time machine in order to team up with his younger self, Prince Viking, and prevent Baby Rabbit Boy from finding that carrot--so Super Rabbit Boy has to go back in time, and with help from an unexpected player, save his younger self and protect the timeline.

"Victorian Scotland is becoming less strange to modern-day homicide detective Mallory Atkinson. Though inhabiting someone else's body will always be unsettling, even if her employers know that she's not actually housemaid Catriona Mitchell, ever since the night both of them were attacked in the same dark alley 150 years apart. Mallory likes her job as assistant to undertaker/medical examiner Dr. Duncan Gray, and is developing true friends--and feelings--in...