As their cross-country journey with their parents continues through the midwest, twins Coke and Pepsi, now thirteen, again face strange assassins at such places as the first McDonald's restaurant and Cedar Point amusement park.

"Waylon, a boy with the mind of a scientific genius and the vulnerable heart of an eight year old, is trying to understand his older sister and deal with changes among the kids at school"--

"Charlie Thorne must search for Charles Darwin's hidden treasure in South America--with plenty of enemies hot on her trail"--

Max Einstein and a group of international geniuses use their creativity and curiosity to help solve some of the world's toughest problems with science.--

After tracking down incredible discoveries by Einstein and Darwin, Charlie is back. This time, the great ruler Cleopatra has left behind an extremely valuable and powerful treasure, its location encoded on an ancient stone tablet. In 30 BCE, Cleopatra and her husband, Marc Antony, lost their war against Octavian for control of the Egyptian Empire. However, Cleopatra knew Octavian was really after the mysterious item that was the source of all her...

Decades ago, Albert Einstein devised an equation that could benefit all life on earth-- or destroy it. Now a diabolical group known as the Furies are hunting for the equation. In desperation, a team of CIA agents drags Charlie Thorne into the hunt. Charlie is a genius... a thief... and not old enough to drive. But she must crack a complex code created by Einstein himself, survive in a world where no one can be trusted, and fight to keep the last equation...

Socially awkward fifth-grade genius Nate Bannister recruits his classmate Delphine to help him reverse one of his many experiments (a dinosaur-sized, invisible cat) while foiling the schemes of the world's most dastardly organization, the Red Death Tea Society.

Michael, Taylor, Ostin, and the rest of the Electroclan head to Taiwan in search of nine-year-old child prodigy Lin Julung, or Jade Dragon, who the Elgen kidnapped for Hatch's army of electric children.

When seventh-grader Jake McQuade mistakes the world's first ingestible knowledge pills for jelly beans, he suddenly knows all about physics and geometry and can speak Swahili (though Spanish would be a lot more useful)--but his sort-of girlfriend Grace thinks they can use his new found brilliance to save their middle school from the new principal, who is conspiring to get it shut down.

"It's the morning of Maisie's tenth birthday, and she can't wait to open her presents. Maisie is not a typical kid. What she wants most for her birthday are the things she needs to build her own nuclear reactor. But she wakes to an empty house, and outside the front door is nothing but an unsettling, all-consuming blackness--a shifted reality. Even for super-smart Maisie, these puzzling circumstances seem out of her control... or are they?"--Page...