On a cross-country vacation with their parents, twins Coke and Pepsi, soon to be thirteen, fend off strange assassins as they try to come to terms with their being part of a top-secret government organization known as The Genius Files.

In the aftermath of a NASA rocket launch gone terribly wrong, Captain Calli Chase comes face-to-face with her missing twin sister - as well as the startling truth of who they really are. Now, a top secret program put in motion years ago has spun out of control, and only Calli can redirect its course. Aided by cutting-edge technologies, the NASA investigator and scientist turned Space Force pilot sets out on a frantic search for the missing link between...

In Fayette, South Carolina, the highlight of Popeye's summer is learning vocabulary words with his grandmother until a motor home gets stuck nearby and Elvis, the oldest boy living inside, joins Popeye in finding the source of strange boats floating down the creek.

Jo Linden lives in a world where there are no atomic weapons, and the Cold War between the United States and the Soviet Union is played out in the Pax Games, fought with powerful robotic mecha war machines operated by young pilots. Jo needs the prize money to save her father's mecha repair shop, and keep what is left of her family together, but when competing pilots start dying from poisoning, Jo finds herself caught up in Cold War politics and political...

When Isaiah's dad is hired to print 3D dinosaur bones, his family is invited to join him. On this trip, the kids are glamping--enjoying the luxury of an RV instead of camping in tents. Attending a park-sponsored stargazing event, Isaiah, Sadie, and Ethan overhear a ranger tell his favorite legend of a gold mine hidden in Zion. While exploring the park, they venture off to investigate an intriguing narrow path. Unexpectedly, they stumble across a carving...

When an unusual solar flare damages his space shuttle and causes astronaut Hank Henshaw and his crew--including his wife--to mutate, he blames Superman and as his surviving consciousness learns to fuse with technology he vows revenge.

"The wackiest road trip in history continues as the McDonald twins travel the Southwest dodging nefarious villains and visiting weird but true American landmarks"--