Young penguins Jackson, also known as Secret Agent 00Zero, and his inventor-friend, Quigley, investigate who is stealing rare fish from the Rookeryville aquarium, hoping to prove themselves to the Frosty Bureau of Investigation.

While visiting their friend Wallis and her adopted daughter on Mount Desert Island, Maine, Josh, Dink, and Ruth Rose investigate why three white wolf cubs were stolen, and by whom.

When Dink, Josh, and Ruth Rose visit a dude ranch in Montana, they find themselves with another mystery to solve, this one involving the theft of money from the ranch's safe and of a large gold nugget that Josh had found.

Ty discovers an entire township chained to a sunken submarine, its inhabitants condemned to an icy underwater grave. It's only the first clue to a mystery that has claimed hundreds of lives and stands to claim two more -- - lives very precious to Ty and his Topsider ally, Gemma.

When the Alden children set out to solve a jewelry store robbery, they find they must also deal with a mysterious thief who steals their favorite cereal.

Gen flaunts his ingenuity as a thief and relishes the adventure which takes him to a remote temple of the gods where he will attempt to steal a precious stone.

Raised to be a thief, blind orphan Peter Nimble, age ten, steals from a mysterious stranger three pairs of magical eyes, that lead him to a hidden island where he must decide to become a hero or resume his life of crime.

1. A Lonesome Childhood 2. Learning a Trade 3. Fagin and His Boys 4. Robbing Mr. Brownlow 5. Kidnapped! 6. Mr. Bumble Brings Bad News 7. The Housebreaking 8. A Dying Woman's Secret 9. A Plot Between Fagin and Monks 10. A Marriage Proposal 11. Oliver is Rescued 12. A Love Story 13. A Chance Meeting 14. An Important Piece of Evidence 15. Nancy Warns Rose Maylie 16. Mr. Brownlow Learns the Truth 17. New Members For the Gang 18. The Dodger is Caught 19....

When outlaw Dirk Yeller arrives in Cowtown looking for something to take away his cat-scratch fever, young Sam, whose pa says he is "a world-a-trouble and curious as a tomcat," knows just what this dangerous and jittery criminal needs to calm him down.

Twelve-year-olds George, the very unlucky third Lord of Devonshire, and his neighbor, scientist Ada Byron, join forces against a nefarious group of criminals who steal the map to a priceless family heirloom.