When Annie tells him about her missing painting, Nate the Great and his trusted companion, Sam Spade, set out to investigate, gather clues, and solve the mystery.

In this story about the boxcar children, Benny's curiosity while on vacation in a fishing village leads to the capture of a swindler.

Six children help solve the mystery of a missing spyglass that has kept two brothers feuding for years.

A collection of tales featuring Mandie, an orphan, and her friends as they solve mysteries together in turn-of-the-century North Carolina.

A collection of tales featuring Mandie, an orphan, and her friends as they solve mysteries together in turn-of-the-century North Carolina.

Detectives' Row is full of talented investigators, but Toby Montrose isn't one of them. He's only an assistant at his uncle's detective agency, and he's not sure he's even very good at that. Toby's friend Ivy is the best sleuth around -- or at least she thinks so. They both see their chance to prove themselves when the famed Hugh Abernathy announces a contest to choose the World's Greatest Detective. But when what was supposed to be a game turns into...

The Alden children, snowbound in a vacation cabin, discover adventure in surrounding wild life, three children they find in the snow, and a search for a lost recipe.

The Alden family rents a houseboat to drift down the river, and encounters a mystery in the little towns along the river, involving a fast black car.

In the late 1950s in the Midwest, a serial killer has been draining their victims of blood, leaving them otherwise undisturbed in their cars and homes. When a fifteen-year-old girl is found covered in blood amidst the latest corpses, she confides only in the sheriff's son but her story is unbelievable at best.

Using her photographic memory, Cam Jansen joins Eric in solving the mystery of how some of the school computers were stolen.