Franklin W Dixon

After a dying criminal confesses that his loot has been stashed "in the tower," the Hardy boys make an astonishing discovery.

" The Hardy Boys are visiting Paris! Joe is excited to check out all the street art he's heard about. And Frank can't wait to go to all the museums he's researched. On their very first day in the city, the brothers are woken up early in the morning by fireworks. But these are no ordinary fireworks. They are a part of elaborate cover for the heist of a priceless artifact. What's worse, the theft seems to have been orchestrated by Joe's favorite street...

When the Hardy Boys eagerly agree to assist their friend Jack Dodd and his father in locating a family treasure, the two young detectives are unaware of the baffling complications that will arise. Deadly road traps, aerial ambush, a spider man and a suspect who carries a menacing cane harass the young detectives as they seek the triple solution to this perplexing and exciting mystery.

When Frank and Joe Hardy put a stop to the alarming, but mostly harmless, pranks of amateur moviemaker Seth Diller, a series of more dangerous copycat pranks leads them to a criminal group called the Red Arrow.

Frank and Joe manage to escape from a hostage situation with a band of smugglers, and, of course, solve another mystery.

Frank and Joe Hardy investigate rumors of a hairy beast running through the woods of Bayport and attacking people. A close encounter with not one but three creatures makes the boys wonder if the beast is real and if it's multiplying.

With two mysteries to solve, Frank and Joe must climb aboard their iceboat the Sea Gull to reach Cabin Island, where a belligerent stranger orders them off. Sabotage to the boat, danger to themselves, and a ghostly prowler do not daunt the Hardy boys in their search for Johnny Jefferson and for clues to stolen antique medals. How the teenage investigators outwit a ruthless foe and succeed in solving both mysteries makes for mounting suspense...

"Frank and Joe are off to the Florida Keys to work alongside Lookout Shark Lab's Dr. E. Ella Edwards, one of the world's foremost marine biologists. On their first evening, Dr. Edwards paddleboards out to check on a lemon shark nursery. But after a sudden squall rolls in, she doesn't return, and the next day her board washes up with a shark bite taken out of it. The Hardys volunteer to help the search and rescue efforts as panic sparks a rift in Lookout...

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.

When the Sweet Sixteen party plans of a local rich girl are overshadowed by pranksters who key her expensive car and post a video of the act on the Internet, Frank and Joe resolve to identify the culprits.