"For the life of him, William "Scoob" Lamar can't seem to stay out of trouble--and now the run-ins at school have led to lockdown at home. So when G'ma, Scoob's favorite person on Earth, asks him to go on an impromptu road trip, he's in the RV faster than he can say FREEDOM. With G'ma's old maps and a strange pamphlet called the 'Travelers' Green Book' at their side, the pair takes off on a journey down G'ma's memory lane. But adventure quickly turns...

As they near the end of their wacky road trip, Coke and Pepsi McDonald realize their adventures are far from over, as they are abducted by aliens, caged with a venomous snake, fall into a volcano, and are pushed into a turbine--and, strangest of all, their parents might actually believe them.

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.

On the last day of second grade, twins Finn and Molly discover a magical camper in their driveway that takes them from Ohio to Colorado, where they must save a famous cow.

"Parker twins Finn and Molly help new friend Carlos follow a treasure map left to him by his grandfather"-- Provided by publisher. Includes authors' note about the Alamo and Texas state facts.