"The Tower Treasure" is the first installment in the "Hardy Boys" series of mysteries. Written by Canadian author Charles Leslie McFarlane and published under the pen name, Franklin W. Dixon, in 1927, "The Tower Treasure" ranks as one of the best works in the series. In this thrilling and suspenseful work, readers are introduced to Frank and Joe Hardy, two clever and resourceful teenage boys, who find themselves in the middle of a strange case involving...

While searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.

The Hardy brothers interrupt their investigations of jewelry-store holdups to answer a plea from their cousins on a New Mexico cattle ranch.

Hired to locate an old Spanish cannon, the Hardy brothers uncover an even greater treasure after perilous underwater adventures.

Frank and Joe suspect that there is something sinister going on at the site of an Alaskan waterfall when they and their friends are harassed and warned to stay away.

"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...