Ocean State Libraries

The robbery of the treasure in the tower proves to be an exciting challenge to Frank and Joe. Frank and Joe attempt to foil a ruthless espionage ring in their effort to sabotage the United States space program.

Teenage detectives Frank and Joe Hardy investigate a case of counterfeiting.

"A banker asks the Hardy Boys to solve the mystery of a secret room in an old deserted mansion." --

While searching in Iceland for a missing sailor sought by an insurance company, the teen-age detective brothers uncover a plot threatening the life of a United States astronaut and the secrets of NASA's moon project.

An assignment from their famous detective father to track down a ring of credit-card counterfeiters takes Frank and Joe Hardy on an exciting camping trip to the Rocky Mountains. The cross-country trek with their pals Chet Morton and Biff Hooper is jinxed from the very first day. Trouble with their tent trailer is compounded by vicious harassments all the way to Colorado. Here their enemies strike at Biff's lovable bloodhound in another attempt to...

The Hardy boys find the missing deed to an Indians' land, prevent a phony salesman from carrying through a reckless scheme, and help their father solve a top-secret case.

The Hardy boys investigate a dispute over a mysterious pond and rumors of piracy in Georgia.

Once again Frank and Joe Hardy accept the challenge of a puzzling case when their famous detective father asks the boys to assist him in tracking down a notorious jewel thief and his accomplices. The trail leads to the outskirts of the Hardys' home town and to a weirdly guarded mansion on the old Perth estate. With their chubby, ever-hungry friend Chet Morton, Frank and Joe tackle another mystery -- one which has baffled the town of Bayport for many...

"Frank and Joe attempt to foil a ruthless espionage ring in their effort to sabotage the United States space program." --