Stuart Gibbs

Thirteen-year-old Ben Ripley is not exactly the best student spy school has ever seen—he keeps flunking Advanced Self Preservation. But outside of class, Ben is pretty great at staying alive. His enemies have kidnapped him, shot at him, locked him in a room with a ticking time bomb, and even tried to blow him up with missiles. And he’s survived every time. After all that unexpected success, the CIA has decided to activate Ben for real. The Mission:...

Agent: Ben Ripley. Mission: Attend spy camp. Although it's not all fun and games. The evil organization SPYDER is up to no good again, and you're somehow connected to it. Objective: To find out what SPYDER is plotting, you'll have to team up on an adventure in the wilderness with Erica Hale, the best spy-in-training (who you have a major crush on)--and her father, Alexander Hale, who isn't quite as good a spy as he claims. Warning: You may have to...

After his spy school training, Ben Ripley is on his first solo mission of infiltrating the White House and stopping a possible presidential assassination, but when his assignment runs into trouble, he isn't sure he can trust his friends for help.

In Paris with his parents to sell family heirlooms, fourteen-year-old Greg Rich suddenly finds himself four hundred years in the past, and is aided by boys who will one day be known as "The Three Musketeers."

When Greg and the Musketeers return to Paris and find the city under siege, they leap into action to prevent King Louis from being overthrown and history from being changed forever.

"Decades ago, Albert Einstein devised an equation that could benefit all life on earth -- or destroy it. Fearing what would happen if the equation fell into the wrong hands, he hid it. But now a diabolical group known as the Furies is closing in on its location. In desperation, a team of CIA agents drags Charlie into the hunt, needing her brilliance to help them find it first -- even though this means placing her life in grave danger. In a breakneck...

With SPYDER apparently defeated, thirteen-year-old Benjamin Ripley is hoping for some peace at spy school, but when the CIA conference room next to where Ben and Alexander are trying to explain everything to Ben's parents (no easy task) is blown up, suspicion falls on fellow trainee (and secret crush) Erica.

After getting expelled from spy school for accidentally shooting a live mortar into the principal's office, thirteen-year-old Ben finds himself recruited by evil crime organization SPYDER.

The local police prove unhelpful when a 500-pound dinosaur skull vanishes from a secret excavation on Sage's family's ranch, so Teddy and his friends conduct their own investigation.

While on a mission aboard the The Emperor of the Seas, Ben Ripley faces off against his arch enemy, Murray Hill, on the high seas and quickly finds himself in hot water as things take a dangerous turn.