The Secret of the Old Mill

The Hardy Boys, Frank and Joe, are on the case to uncover the secrets of an old mill. With a counterfeiting ring in their town, the boys must use their detective skills to solve the mystery and bring the criminals to justice. The third book in the classic Hardy Boys mystery series! Join these amateur sleuths on an action-packed adventure as they work to solve the case before it's too late. 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?