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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 message in the haunted mansion
Synopsis
Nancy Drew finds herself in a puzzling situation when strange occurrences begin at an old mansion. Rumors say the house is haunted, but Nancy is determined to uncover the truth behind the eerie events. Join her as she investigates the secrets hidden within the mansion's walls.