Franklin W. Dixon

Frank and Joe Hardy have been invited to take part in a conservation mission by a marine biologist at the Bayport Aquarium. The boys get to go on an all-expenses-paid trip to the lush and beautiful Florida Keys to help save sharks!

A wave of motion rippled through the cattle as they broke into a run. The cows directly behind Sarah and me looked back anxiously. The entire herd would be upon us in no time. Sarah cupped a hand to her mouth. "Clear out of the way! Stampede!"

There are no streetlights on Farragut Alley, so keeping Gabe in our sights was difficult. We followed him down toward the dead end, and then suddenly a door opened to our right, in one of the nondescript retail buildings. I wasn't aware of apartments being inside, but maybe above the stores....

Something is not right in Bayport. After a series of unfortunate (yet harmless) pranks, it looks like Frank and Joe have caught their suspect surprisingly early....

Bound to the sea by rocks and dirt, Cabin Island stands shrouded by fog and mystery. The Hardy Boys are up to the challenge! Stolen groceries, creeping tycoons, and missing heirlooms plague the island, and with the intention of cashing in a favor, the Hardy Boys find themselves in the midst of it.

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.

One of the Hardys’ favorite writers, Nathan Foxwood, has recently died in a tragic car accident. Now, the press is swarming his house in Bayport to get the scoop on the novel he completed just before his untimely death.

Frank and Joe Hardy, brothers who are high school students, help a stranger at the train station to exchange a five-dollar bill—only to find out later that it was counterfeit. Bayport seems to be flooded with counterfeit money, and people are on guard....

Frank and Joe Hardy, erstwhile teenage detectives, feel somewhat foolish after accepting a counterfeit bill while helping a stranger at the Bayport train station. Over a period of weeks, friends and family members fall prey to exchanges with counterfeiters....

A routine trip to visit the new hometown airport turns into a high-flying race against danger for the Hardy Boys!

Frank and Joe are back on Black Bear Mountain, the scene of a previous wilderness adventure and mind-bending mystery. This time, the brothers are checking in on Dr. K, a friend they made during their first trip....

As I rounded the corner, I spotted Rick just ahead. He paused and bent down to poke at something on the ground by his feet, muttering something that I couldn't make out due to the wind....

"JOE!" Frank suddenly yelled behind me, but it was too late. A dark shape advanced on us from inside the doorway....

Brother detectives Frank and Joe cook up a new case as a series of accidents threatens a remote island in the 22nd book in the thrilling Hardy Boys Adventures series....

Their instincts and intelligence were valuable assets for teenage brothers, Joe and Frank Hardy, as they followed in the footsteps of their well-known father, Fenton Hardy, a former police detective....

This collection introduces The Hardy Boys, two teenage brothers who hope to follow in the footsteps of their father, a famous private detective: In The Tower Treasure, The House On The Cliff, and The Secret of the Old Mill.

While riding in their homemade iceboat on the frozen surface of Barmet Bay, Frank and Joe Hardy and Chet Morton discuss their plans for the upcoming Christmas holiday break. They visit Cabin Island but a mysterious stranger chases them off the island.

The Secret of the Caves is the seventh novel in The Hardy Boys mystery stories series. At their home in Bayport Frank, Joe, and Fenton, receive a visitor who informs them that Professor Morgan Todd from Kenworthy College has disappeared.

Frank and Joe, the sons of famous detective Fenton Hardy, want to follow in their father's footsteps. Their first chance to solve a mystery comes when jewels and securities are stolen from the safe of the local Applegate mansion....

While enjoying a summer day boating on Barmet Bay, Frank and Joe end up saving Mary Todd from downing. She was on her way to see their father, Fenton Hardy about the mysterious disappearance of her brother.