A bratty prince and his whipping boy have many adventures when they inadvertently trade places after becoming involved with dangerous outlaws.

While visiting London, Dink, Josh, and Ruth Rose solve a mystery and meet the Queen.

When their elderly owner goes to the hospital, Butterbean the dachshund, Walt the cat, Oscar the mynah bird, and rats Marco and Polo plan a robbery to support themselves.

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 their ranch's safe and of a large gold nugget that Josh had found.

The four Alden children, aged six to fourteen, volunteer at the new recycling center in town, and help uncover who is breaking in and making a mess each night.

Dink, Josh, and Ruth Rose investigate the theft of a great deal of money from the belly of a nearly life-size Tyrannosaurus Rex model that their friend, Jud Wheat, is using to raise money for a dinosaur museum.

While visiting Aunt Molly at a fancy downtown hotel, Cam uses her photographic memory to help one of the guests find her stolen luggage and pet cat, and to catch the thief.

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.

Goldie, an impulsive and bold twelve-year-old, escapes the oppressive city of Jewel, where children are required to wear guardchains for their protection, and finds refuge in the extraordinary Museum of Dunt, an ever-shifting world where she discovers a useful talent for thievery and mysterious secrets that threaten her city and everyone she loves.

When fifteen-year-old Ty, who has always lived on the ocean floor, joins Topside girl Gemma in the frontier's underworld to seek and stop outlaws who threaten his home, they learn that the government may pose an even greater threat.