The Clue of the Black Keys (original text)

The Clue of the Black Keys (original text)

Nancy Drew Mystery Stories Book 28 The Clue of the Black Keys (original text) cover art
Nancy Drew Mystery Stories – Book 28
The Clue of the Black Keys

During an archaeological expedition in Mexico, two professors, the senior Dr. Joshua Pitt and young Terry Scott, find a clue to buried treasure.

The clue was a cipher carved on a stone tablet.

Before the older professor had time to translate it, he and the tablet disappeared!

Terry tells Nancy of his suspicions of a Mexican couple, posing as scientists, who vanished the same night as Dr. Pitt.

Nancy follows a tangled trail of clues that lead to Florida and Mexico and a secret of antiquity that can only be unlocked by three black keys.

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