The Secret of the Old Mill (Paperback) (ISBN-13: 9780486851464)

Amateur sleuths Frank and Joe Hardy investigate a counterfeit operation while their detective father is connected to a secret case involving national security. An old mill on the outskirts of town appears to hold the key to solving both crimes. Determined to learn the secret of the old mill, Frank and Joe devise a clever scheme to gain entrance, only to find themselves trapped in an underground tunnel. Ranking on the All-Time Bestselling Children's Books list, the third installment of the Hardy Boy series will have readers on the edge of their seats.

Author: Franklin W. Dixon
ISBN-10: 048685146X
ISBN-13: 9780486851464
Publisher: Dover Publications
Language: English
Published: 06/14/2023
Pages: 160
Format: Paperback
Weight: 0.36lbs
Size: 8.04h x 5.83w x 0.28d