The Secret of the Old Mill is the third volume of the original The Hardy Boys Mystery Stories. This book was written for the Stratemeyer Syndicate by Leslie McFarlane under the pseudonym Franklin W. Dixon in 1927. After becoming victims of a counterfeiting ring, the boys become suspicious of the activities surrounding a previously disused mill on a deserted road by the river. When they give a boat ride to a stranger with a somewhat suspect story, and the stranger steals the boat and tries ...