The youngest of the Murry children must travel through time and space in a battle against an evil dictator who would destroy the entire universe.

After being captured by the Recons and returned to civilization for reprogramming, Roz is sent to Hilltop Farm where she befriends her owner's family and animals, but pines for her son, Brightbill.

While living on a moon base with fellow lunarnauts, Dashiell Gibson investigates the murder of one of the moon's most prominent doctors.

"Jake Foster, a shapeshifting alien of goo disguised as a human, and his spunky friend Agnes investigate the mysterious takeover of their neighbors by "imblobsters" and uncover the reason Jake is losing control of his ability to keep his human shape"--Title verso page.

"Mason and Ty were once the very best of friends, like two nerdy sides of the same coin...until seventh grade, when Ava Petrakis came along. Now Mason can trace everything bad in his life to that terrible fight they had over the new girl. The one thing he'd give anything for is a do-over. But that can't happen in real life--can it? As a science kid, Mason knows do-overs are impossible, so he can't believe it when he wakes up from a freak accident...

With Meg Murry's help, the dragons her six-year-old brother saw in the vegetable garden play an important part in his struggle between life and death.

Two teenagers use H. G. Wells's famous time machine to race through time and stop a dangerous enemy.

Eleven-year-old Ace Wells's dream has finally come true: he is a new cadet in the B.E.S.T. (Biological Enhancement Systems Technology) Program. Until now, he's been living in the shadow of his superstar brother, Finn--but not for long. This is the new Ace! He knows he can make his mark on the world with SuperSoar wings, but on day one, nothing goes as planned. The antagonistic elevator AI Otis wants to eat his belongings, the physical feats set by...

"After an accident leaves him damaged and separated from his scientist caregiver, a young android recruits four robot accomplices and embarks on a cross-country road trip to reunite with her"--

"Blue River Creek has a problem: There's a pet thief on the loose! Or at least Iggy and Sofia are convinced that there is. But as a scientist, Ada knows it's important to follow the facts and not jump to conclusions. And the only fact they have right now is that a lot of pets are missing. How will Ada, Iggy, Rosie, Sofia, and Aaron figure out what happened to the town's pets? With the scientific method, of course! Through making a hypothesis, collecting...