The Clue of the Black Keys (revised text)

The Clue of the Black Keys (revised text)

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

Terry Scott, a young archaeology professor, seeks Nancy’s help in unearthing a secret of antiquity which can only be unlocked by three black keys.

While on an archaeological expedition in Mexico, Terry and Dr. Joshua Pitt came across a clue to buried treasure – a cipher carved on a stone tablet.

Before the professor had time to translate the cipher, the tablet disappeared – along with Dr. Pitt!

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

Nancy and her friends follow a tangled trail of clues that lead to the Florida Keys and finally to Mexico in this suspense-filled story that will thrill readers.

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