The secret of the old mill cover

The secret of the old mill

by Franklin W. Dixon

3.9/5
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About This Book

The Hardy boys are determined to learn the secret of an old mill and employ a clever ruse to gain entrance. But soon they are trapped.In this adventure, there is danger on two levels for Frank and Joe. First, they confront a nasty gang who will stop at nothing to halt their investigations and second, their father Denton Hardy is on a confidential mission that may deal with sabotage.Will the Hardys unravel the mysteries?

Chapters (31)(click to expand)

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