The boys once again have jumped into the thick of a complicated mystery. Samuel Blacksone and his brother Ruel Rand live on adjacent properties, and it appears that one of them is out to hurt the other because they are both attacked. Frank and Joe soon learn that treasure is rumored to be hidden between the two properties, and as they investigate, they learn that others are involved in the apparent plot between the two brothers. Spooky mansions, secret passages and rooms, mysterious characters, and a monster provide an enjoyable atmosphere to this Hardy Boys mystery.

• We started tracking this book on January 26, 2013.
• This book was $6.99 when we started tracking it.
• The price of this book has changed 32 times in the past 4,556 days.
• The current price of this book is $5.99 last checked 15 hours ago.
• This book is at its lowest price in the past year.
• The lowest price to date was $4.99 last reached on February 5, 2017.
• This book has been $4.99 one time since we started tracking it.
• The highest price to date was $9.99 last reached on June 16, 2022.
• This book has been $9.99 one time since we started tracking it.

• Children's eBooksGrowing Up & Facts of LifeFamily LifeSiblings
• FranceFamily Life(Current)Siblings
• Children's eBooksGrowing Up & Facts of Life

• Text-to-Speech: Disabled
• Lending: Disabled
• Print Length: 193 Pages