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The Mystery of the 99 Steps
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CKCarolyn Keene

Nancy Drew investigates a puzzling case involving a coded message and a secret staircase that leads her to uncover hidden treasure and solve a family mystery.

mystery | 176 pages | Published in 1966

mysteryfictionyoung adultchildrensclassicsmiddle gradejuvenilemystery thrilleradventuredetective
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