Dixon, Franklin W

Frank and Joe join their friend Jack and his father in hunting a lost treasure.

In solving the mystery of two medallions missing from an inherited curio collection, the Hardys wind up in a desolate area of Guatemala at the mercy of dangerous thugs.

On a winter vacation in Jamaica the Hardy boys begin a dangerous adventure when an ancient bronze death mask is discovered near their beach house.

Their efforts to recover a stolen ancient chess piece lead the Hardy brothers to Hong Kong where they help smash an international criminal organization.

The two Hardy brothers help their father search for stolen electronic parts.

Frank and Joe uncover a plot to steal a vital top-secret instrument of the space program.

Frank and Joe use all their courage and skill to outwit the criminals who kidnapped their friends.

Frank and Joe solve a mystery involving the disappearance of a professor, a hot-tempered hermit, sabotage at the new Bayport Coastal Radar Station, and the Honeycomb Caves.

The Hardy boys track down the saboteurs who kidnapped their father.

After the new hydrofoil they are guarding is stolen, the Hardy boys face frequent danger in solving a mystery involving criminals who operate by signs of the zodiac.