During their search for members of a notorious gang responsible for a payroll robbery, Joe and Frank Hardy encounter timber wolves, a blizzard and a mine cave-in.

Fenton Hardy, internationally known detective, asks his sons, Joe and Frank to help him find some smugglers.

A brilliant professor vanishes, leaving behind only a cryptic message scrawled on an exam paper. Just when the Hardy brothers, Frank and Joe, are about to hit a dead end, a new clue surfaces, pointing them toward the mysterious Honeycomb Cliffs. Danger and intrigue await them as they tunnel into cavernous depths, determined to unearth the secrets hidden within. Join the boys for an exciting but treacherous adventure in book seven of the Hardy Boys...

Her friends Bess and George accompany Nancy to Greece where there are two mysteries they want to solve. One mystery is about the theft of a charitable gift and the other is about the disappearance of an inheritance.

Nancy Drew's keen mind is tested when she searches for a missing will.

Idaville's secret weapon against lawbreakers, ten-year-old Encyclopedia Brown, assists the police force with ten insoluble cases. Solutions are at the back of the book.

While visiting Wallis's castle, Dink and his friends investigate strange noises that lead them to a dangerous secret.

The Alden children save an old woman's house, land, and all the animals in her animal shelter from greedy contractors.

While trying to help a friend out of a difficulty, teenage detective Nancy Drew has a perilous experience in and around a deserted bungalow.