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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 Case of the Twin Teddy Bears
Nancy Drew is called upon to investigate a perplexing situation involving two identical teddy bears. One of these seemingly innocent toys may be concealing a secret far more valuable than its stuffing. Nancy must use her keen detective skills to uncover the truth hidden within the cuddly companions.