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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 Clue on the Silver Screen
Synopsis
While attending a film festival on Martha's Vineyard, teen detective Nancy Drew investigates the disappearance of a brilliant film, whose never-seen ending someone is murderously determined to keep secret. Original.