Teenage detective Nancy Drew uses her courage and powers of deduction to solve the mysterious happenings in an old stone mansion.

"The Secret of the Old Mill" is the third installment in the "Hardy Boys" series of mystery stories. Written by Canadian author Charles Leslie McFarlane and published under the pen name, Franklin W. Dixon, in 1927, "The Secret of the Old Mill" ranks as one of the best books in the series. In this thrilling installment, readers find the Hardy brothers, Joe and Frank, investigating the mysterious appearance of counterfeit money in their small town of...

Nate the Great solves the mystery of the missing picture.

As more and more of his flowers display the bit marks of a wandering tortoise, Nate sets out to uncover the mystery of the reptile's origins.

Nancy Drew sets out to prove that her father's client was unjustly accused of trying to sabotage the United States space program.

Teenage detectives Frank and Joe Hardy investigate a supposedly haunted house reported to be the hangout of criminals.

The Aldens take a trip to the New England coast and get to stay in a lighthouse! But strange things happen after it gets dark-an unknown woman is seen walking around, and the Watch wakes up growling late at night. Can the Boxcar Children shed light on a seaside mystery?

The Hardy brothers' visiting Greek pen pal enlists their help in searching for a priceless ancient Greek helmet loaned to and lost by a Hollywood movie company years before.

A fifth-grader with a photographic memory and her friend Eric help solve the mystery of the stolen diamonds.

The Hardy boys and two friends take a camping trip to the Rocky Mountains in an attempt to locate a gang of credit-card counterfeiters.