Tom Swift and His Motor-Boat - Audiolibro Gratis

Tom Swift's father, a world-famous scientist, has been robbed of one of his greatest inventions, and it's up to Tom to bring the criminals to justice without getting himself killed in the process. Unfortunately, Tom himself quickly becomes a target of the rogues' anger when he unknowingly buys a boat in which they had hidden a stolen diamond. Tom must use every bit of his wit to keep himself ahead of the gang of hardened felons.

This is the second book in the original Tom Swift (Sr) series. (Summary from Wikipedia)