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False bills are spreading through Bayport, and a lonely old mill holds more than dark corners.
In The Secret of the Old Mill by Franklin W. Dixon, counterfeit money cheats honest people in the waterfront town of Bayport. Teenage brothers Frank and Joe Hardy take on the mystery. Frank looks closely and reasons things out. Joe is quick, bold, and eager to act. Together, they face false clues and close escapes.
Their father, professional detective Fenton Hardy, gives the brothers an example to follow. But this case draws them toward a lonely mill, away from busy streets, where a criminal operation lies hidden. Short chapters and brisk prose keep the action moving, with little pause for description. The challenge is to find the truth when clues can lead the wrong way.
What you’ll discover
- Two different kinds of courage Follow careful Frank and bold Joe as they bring different strengths to the same mystery.
- False money, real harm See how counterfeit bills turn an everyday exchange into a crime against unsuspecting people.
- A mill full of shadows Enter a lonely building whose dark corners give this adventure its atmosphere of danger.
- Clues that test your judgment Watch the brothers notice details and reason through a case complicated by false leads.
- Adventure without the wait Enjoy short chapters, lean description, and close escapes in a story that puts action first.
Who will love it
You will enjoy this if you like classic boys' adventure, small-town mysteries with honest clues, speedboat chases and brothers who work as a team.
What’s inside
The key ideas, in the 15-minute summary
- A friendly stranger leaves a false bill
- False money hurts ordinary people
- A rescue brings the mill closer
- Quick thinking defeats an armed passenger
- Suspicion grows around the old mill
- Good manners do not prove honesty
- Teamwork gives courage its support
- Small clues form a clear chain
- Small details guide the brothers onward
Who’s who
- Frank HardyThe older brother, a careful planner who notices small details and wants to follow in his father's footsteps as a detective.
- Joe HardyThe younger, fair-haired brother, quick and brave, who dives in first and wants to help anyone in trouble.
- Fenton HardyThe boys' father, a famous detective called in by the government to trace a flood of counterfeit money.
- Chet MortonA plump, cheerful friend who loves practical jokes and always has a trick ready for someone.
- Tony PritoA loyal friend whose father owns the fastest motorboat on the bay until the Sleuth arrives.
- LesterA lonely, kind boy who lives at the old mill with a stern uncle and longs to go to school.
- Uncle DockThe white-bearded man who runs the mill, claims to be developing breakfast food and wants no visitors.
- MarkelA nervous, short-tempered man at the mill who keeps watch for anyone sneaking close.
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The Secret of the Old Mill
by Franklin W. Dixon · 1927
A fake five-dollar bill sends Frank and Joe Hardy toward a strange mill where no visitor is welcome.
Easy read2–5 hours to read20 languages
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In short
What would you do if a stranger on a train platform asked you to change a five-dollar bill? Frank and Joe Hardy hand over their own money without a second thought, and the bill they get back is fake.
The Secret of the Old Mill at a glance
- Reading time
- About 2 h 35 min2 h 5 min fast, 3 h 5 min slow
- Length
- 37,200 words
- Library level
- Easy short sentences, plain words
- First published
- 1927by Franklin W. Dixon
Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated
From the 15-minute summary · Key idea 1
A fake five-dollar bill fools the brothers
Frank and Joe Hardy wait at Bayport station for the afternoon express. They hope to meet their father, Fenton Hardy, who has been away two weeks on a murder case. He does not step off the train. A tall, well-dressed young stranger does, and he hurries toward the boys with a problem.
He says he must pay a friend one dollar and holds out a five. Frank and Joe hand over five dollars between them and take the bill. The stranger thanks them and climbs back on the train.
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Details
- First published
- 1927
- Language
- English
- Reading time
- 3 h 0 min
- Level
- Easy read
Cite this edition
Dixon, Franklin W. The Secret of the Old Mill. Library of Alexandria, 2026, libraryofalexandria.com/products/the-secret-of-the-old-mill.
Dixon, F. W. (2026). The secret of the old mill. Library of Alexandria. https://libraryofalexandria.com/products/the-secret-of-the-old-mill (Original work published 1927)
Dixon, Franklin W. The Secret of the Old Mill. Library of Alexandria, 2026. https://libraryofalexandria.com/products/the-secret-of-the-old-mill.
@book{dixon2026secret,
author = {Dixon, Franklin W.},
title = {The Secret of the Old Mill},
publisher = {Library of Alexandria},
year = {2026},
url = {https://libraryofalexandria.com/products/the-secret-of-the-old-mill},
note = {First published 1927}
}
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What is The Secret of the Old Mill about?
Frank and Joe Hardy are fooled by a fake five-dollar bill at the train station. As counterfeit money spreads through Bayport, they follow clues toward an old mill run by three unfriendly men and a lonely boy named Lester.
Do I need to read the earlier Hardy Boys books first?
No. The narrator briefly explains who the Hardys are and mentions The Tower Treasure and The House on the Cliff. The story stands on its own, so a new reader can start here and follow the mystery easily.
Who is Lester in The Secret of the Old Mill?
Lester is a lonely, fair-haired boy who lives at the mill with his Uncle Dock. Joe rescues him from the millrace, and the brothers later talk with him because they think he knows more about the mill than he realizes.
The author
Franklin W. Dixon
Collective pseudonym for mystery writers
Franklin W. Dixon is a shared pen name, not one person. Several writers used it for the Hardy Boys mystery series, which began in the United States in 1927. Canadian writer Leslie McFarlane wrote the first three books, including The Tower Treasure. The name has no birth or death dates.
More by Franklin W. Dixon
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