The Tower Treasure

A dying criminal confesses that his loot has been stored "in the tower." Both towers of the looted mansion are searched in vain. It remains for the Hardy boys to make an astonishing discovery that clears up the mystery and clears the name of a friend’s father.

• The House on the Cliff (Hardy Boys)
• The Secret of the Old Mill (Hardy Boys, Book 3)
• The Secret of the Old Clock (Nancy Drew, Book 1)
• The Missing Chums (Hardy Boys, Book 4)
• Hunting for Hidden Gold (The Hardy Boys, No. 5)
• The Shore Road Mystery (Hardy Boys #6)
• The Secret of the Caves (Hardy Boys, Book 7)
• The Hidden Staircase (Nancy Drew Mystery Stories #2)
• The Mystery of Cabin Island (Hardy Boys, Book 8)
• The Bungalow Mystery