Description
A counterfeiting case leads Frank and Joe Hardy into an investigation of an old mill, constructed by the pioneers
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With two cases in tow, the Hardy boys look to Turner mill for clues. Determined to learn the secret of the old mill, Frank and Joe employ a clever ruse to gain entrance, only to find themselves trapped. How the young detectives extricate themselves from this dangerous situation and unravel mysteries will keep readers tense with suspense!
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