Amateur sleuths Frank and Joe Hardy investigate a counterfeit operation while their detective father is connected to a secret case involving national security. An old mill on the outskirts of town appears to hold the key to solving both crimes. Determined to learn the secret of the old mill, Frank and Joe devise a clever scheme to gain entrance, only to find themselves trapped in an underground tunnel. Ranking on the All-Time Bestselling Children’s Books list, the third installment of the Hardy Boy series will have readers on the edge of their seats.
Table of Content
I. A Five Dollar Bill
II. Counterfeit Money
III. The Hardy Boys at School
IV. Another Victim
V. Curing the Joker
VI. The Old Mill
VII. In the Mill Race
VIII. Joe’s Courage
IX. The Rescue
X. The New Boat
XI. A Man in a Hurry
XII. Seasick
XIII. Paul Blum
XIV. Con Riley Guards a Package
XV. The Chase
XVI. A Plan of Action
XVII. What Lester Said
XVIII. Suspicions
XIX. The Rug Buyer
XX. A Note of Warning
XXI. At the Mill
XXII. Through the Roof
XXIII. The Alarm
XXIV. Trapped
XXV. The Reckoning
About the author
Franklin W. Dixon is the pen name used by a variety of different authors who were part of a team that wrote The Hardy Boys novels for the Stratemeyer Syndicate.
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