Carolyn Keene

Teenage detective Nancy Drew uses her courage and powers of deduction to solve the mysterious happenings in an old stone mansion.

Nancy Drew comes to the aid of the owners of a local dancing school when they receive an anonymous note threatening their lives.

Blue bells will be singing horses! This strange message, attached to the leg of a wounded homing pigeon, involves Nancy Drew in a dangerous mission. Somewhere an elderly woman is being held prisoner in a mansion. Nancy is determined to find and free Mrs Eldridge. While working on the case, the young detective's close friend, Helen Archer, begs her to solve a weird mystery. Helen's grandparents, the Cornings, are frightened by a sinister wheel of

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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.

Nancy Drew determines whether an ivory elephant charm really protects its wearer from harm when she investigates the involvement of a member of the Bengleton Wild-Animal Show in a mysterious scheme.

Aboard a clipper ship in Boston Harbor, Nancy Drew helps Captain Easterly uncover the mystery of ghostly visitors, while she searches for a clue to the clipper's missing figurehead.

The blatant acts of a lady swindler posing as Nancy Drew arouse the suspicion of friends and local police against the real Nancy.

When a gang that uses parties as a cover for robberies victimizes a masquerade party Nancy is attending, the teen-age detective switches identity with her girl friend to solve the case.

Nancy arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch, but abruptly finds herself involved in a baffling mystery. The ranch is being haunted by a phantom horse and maliciously damaged by an unknown enemy.

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?