Nancy receives a letter meant for a British heiress who has the same name and, in her attempts to contact the other young woman, faces danger from a man who operates a Lonely Hearts Club mail fraud.

On her way to Red Gate Farm, Nancy encounters a mysterious saleswoman in a perfume shop, a curious man on the train, and a strange code to be deciphered, but when she arrives at the farm, Nancy is compelled to investigate her suspicions that part of the farm is being used for a secret society's meetings.

While trying to help a friend out of a difficulty, teenage detective Nancy Drew has a perilous experience in and around a deserted bungalow.

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...

Nancy Drew sets out to prove that her father's client was unjustly accused of trying to sabotage the United States space program.

Blind violinist Deirdre Thompson is vying for top honors in a musical competition, but the concert hall is the focus of a criminal conspiracyand Deirde is the first to sense trouble and face danger.

Nancy must discover who is blackmailing a foreign exchange student who is staying with one of Nancy's neighbors.