The Secret of the Old Mill

Mystery strikes the quiet town of Bayport when counterfeit money begins to circulate, and all clues point to the dark, rumbling Turner’s Mill on the outskirts of town. In this classic detective adventure, the heroes must uncover the secret hidden within the grinding gears of the mill before the criminals shut them down permanently. It is a high-stakes game of cat and mouse featuring secret passages, boat chases, and a desperate escape from the churning wheel of the mill itself.

Now, you have the chance to step into the shoes of the world’s most famous amateur detectives. By customizing this story, you—along with a brother, best friend, or partner—become the ones cracking the code and dodging danger. Imagine seeing your own names on the page as you sneak into the enemy hideout, piece together the evidence, and save the local economy from a ring of clever counterfeiters. It transforms a standard mystery into a heart-pounding personal mission.

This book is an ideal gift for siblings, best friends, or anyone who grew up loving the thrill of a good mystery. It captures the essence of classic adventure, where quick thinking and bravery are all that stand between the heroes and disaster. Whether for a nostalgic adult or a new reader ready to solve their first case, placing their names in the center of the action makes the danger feel real and the victory even sweeter.

In the third volume of the series, Frank and Joe Hardy investigate a mysterious counterfeiting operation rumored to be based in an old, abandoned mill. They face peril at every turn as they work to uncover the criminals’ secrets.