The Hardy Boys - The Secret of the Old Mill

“The Secret of the Old Mill” is the third volume in the original “Hardy Boys” mystery series. It ranks 86th on the “Publisher’s Weekly” All-Time Bestselling Children’s Book List for the United States, with nearly two million copies sold.

First, a 14-year-old cyclist is almost killed in an accident, then the Hardy’s friend Chet is tricked into accepting a counterfeit $20 bill, and a mysterious and threatening note is left at the Hardy home. Clues seem to point toward a missile-development company and an old mill. Shortly thereafter, an arrow is fired at the group with another threatening note and the counterfeit cash continues to spread around the town. While investigating the mill, the boys are attacked, then captured. Can they escape and solve this case of international espionage?