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Carolyn Keene
Carolyn Keene is the pseudonym of the authors of both the Nancy Drew Mystery Stories (and a spin-off called River Heights) and The Dana Girls Mystery Stories, both produced by the Stratemeyer Syndicate.
The Mystery at Magnolia Mansion
Synopsis
Teenage detective Nancy Drew visits a historic estate to investigate a series of strange occurrences and hidden secrets. She must use her wits to navigate the shadows of the old mansion and find the truth behind a local legend. This classic mystery follows Nancy as she solves one of her most puzzling cases yet.