Stuart Gibbs

Thirteen-year-old Ben Ripley's unexpected success outside the classroom causes the CIA to activate him for a mission to become friends with Jessica Shang, daughter of a suspected Chinese crime boss.

For once, operations at the enormous zoo/theme park appear to be running smoothly (except for the occasional herring-related mishap in the penguin exhibit) and Teddy Fitzroy is finally able to give detective work a rest. But then a local lion is accused of killing a famous dog--and the dog's owner, an inflammatory radio host, goes on a crusade to have the cat declared a nuisance so it can be hunted. However, there's evidence that the lion might have...

"Dashiell Gibson, who lives on Moon Base Alpha, has to solve a murder of one of the moon's most prominent doctors"-- Provided by publisher.

In 2041 on Moon Base Alpha, thirteen-year-old Dash must solve the mystery of how Lars was poisoned before the base loses oxygen, forcing the colonists to return to Earth.--Provided by Publisher.

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.

As almost thirteen-year-old Ben, a student at the CIA's academy for future intelligence agents, prepares to go to spy summer camp, he receives a death threat from the evil organization SPYDER.

In 2041 twelve-year-old Dashiell Gibson is a resident of Moon Base Alpha, and at the moment he is faced with a number of problems: coping with the nasty Sjoberg twins, finding out how the commander of the base has managed to disappear from a facility no bigger than a soccer field, and dealing with the alien Zan who communicates with him telepathically from afar--and who is hiding a secret which may threaten the whole Earth.

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.

Twelve-year-old Teddy Fitzroy is the prime suspect when FunJungle's newly-acquired koala goes missing, thanks to a prank staged by middle school bully Vance Jessup.

After being expelled from spy school, twelve-year-old Ben Ripley accepts an offter to join evil crime organization SPYDER, and although he knows he is a key part of their sinister plan he is not sure how to get word to the good guys without being caught.