The Secret of the Old Mill

In this unabridged version of "The Secret of the Old Mill," brothers Frank and Joe Hardy uncover a mystery involving counterfeit bills that leads them into unexpected danger. Their investigation takes them to an old mill, where they suspect a connection between the counterfeit money and possible illicit activities. As the Hardy Boys and their friends dig deeper, they face increasingly perilous situations while seeking to uncover the truth behind the counterfeit scheme.