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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.
Process of Elimination
Nancy Drew heads to Los Angeles for an environmental conference, only to find herself embroiled in a murder investigation. Meanwhile, the Hardy Boys stumble upon a bizarre bamboo heist in San Diego, which surprisingly connects to Nancy's case. The trio teams up to untangle a web of international intrigue and danger, putting their lives on the line to solve the mystery.