The Secret Of The Old Mill: The Hardy Boys Book 3 (The Hardy Boys, 3)

In the third installment of the Hardy Boys series, brothers Frank and Joe Hardy gain entrance to an old mill but find themselves trapped in an underground tunnel as they try to unravel two mysterious cases.

• | Author: Franklin W. Dixon
• | Publisher: Dover Publications
• | Publication Date: Jun 14, 2023
• | Number of Pages: 160 pages
• | Language: English
• | Binding: Paperback
• | ISBN-10: 048685146X
• | ISBN-13: 9780486851464