Carolyn Keene

Nancy arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch but finds herself embroiled in a baffling mystery involving a phantom horse and buried treasure. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Suspecting that a treasure hidden by Valentine...

An anonymous diary is a mystery with handwriting that is difficult to decipher. It is filled with technical drawings and chemical formulas. Was the destructive explosion an accident or an act of revenge?

A carrier pigeon furnishes Nancy with a clue to a mysterious retreat.

Nancy Drew travels to Peru to solve a mystery involving a long-lost treasure and a crossword clue carved into an ancient wooden plaque.

While trying to locate a missing dancer who is about to gain a large inheritance, Nancy Drew finds a clue leading to the solution of yet another mystery.

Trapped in a beautiful Montana ski resort with someone bent on destruction, teenage sleuth Nancy Drew, wearing a leg cast, must solve the crime in time to save the holiday season.

Nancy's discovery of a treasure map leads her into a network of underground passageways beneath a spooky cemetery, where she uncovers a series of clues to both a recent outbreak of robberies and the location of a long-lost fortune in gold.

"Nancy's Alaskan adventure continues as she, Bess, and George disembark the mystery-plagued Arctic Star cruise ship and explore the grand sites of the forty-ninth state: Skagway; the Yukon territory, and Denali National Park. It's spectacular scenery, but things start to go wrong almost immediately, leading Nancy to believe that whoever was behind the unsolved mayhem aboard the ship has followed them onto dry land. The girl detectives had better watch...

When a cash box is stolen from a visiting carnival, Nancy endeavors to clear the name of her accused friend, Ned, and uncovers a complicated plot involving financial mismanagement, a setup and other sinister activities.

As the carnival sabotage continues, it looks like the saboteur has a specific target: the Mahoney Scholarship Award ceremony. There are four equally worthy candidates up for the scholarship, making them equally worthy suspects. The evidence is slowly mounting - threatening notes, arson. On top of that, the intrigue is getting closer to home and Nancy's father is getting wrapped up in the the case.