While trying out the spy glasses, spy hat, and other items in their new spy kit, seven-year-old Henry and his dog Mudge make a new friend and form a spy club.

On his first day at Brooklyn's P.S. 858, fifth-grader Michael K. is teamed with two very strange students, and while he gradually comes to believe they are aliens who need his help, he has trouble convincing anyone else of the truth.

When Koko Dodo's secret chocolate sauce is stolen just before an important cooking contest Didi, a dodo bird, devises a daring plan to help--whether he wants her to or not.--

An endangered Giant Panda has been kidnapped. Can Secret Agent Jack Stalwart find the panda and rescue it before the Scorpion Gang sells it on the black market?

A team of GPF scientists has vanished in the Arctic while doing research on global warming. While rescuing them from the jaws of a hungry polar bear, nine-year-old secret agent jack Stalwart learns of the malicious Black Arctic Project - a group of mysterious villains are speeding up global warming by blowing up glaciers. Can Jack stop them before the entire planet is doomed?

Dragon twins Ella and Owen try to make peace between a community of dwarves and a community of elves, both of which think the twins are spies.

The Global Protection Force refused to share any details with Jack about his brother's whereabouts, but on two previous missions, Jack had collected clues that pointed to Max being in Egypt. Now Jack has reason to believe that King Tut's diadem--a crown thought to have magical powers--is the cause of Max's disappearance. Can Jack prevent an ancient and terrible curse of the pharaohs from wreaking havoc and finally save Max?