Tower Treasure (Version 2) - Free Audiobook

The Hardy boys were sons of a celebrated American dectective and from their father learned the particulars of a number of unusual crimes. They were fired with zeal to bring the criminals to justice, and during their hours from school, and during their vacation days, they followed up clues they unearthed themselves — aiding their parent very materilly. Stories which are absorbing in the extreme.

A dying criminal confessed that his loot had been secreted "in the tower." Both towers of the mansion were searched, but in vain. It remained for the Hardy boys to make an astonishing discovery that cleared up the mystery. - Summary by From the book jacket