The Hardy Boys #7: The Secret of the Caves

Unabridged Audiobook

Written By: Franklin W. Dixon

Narrated By: Bill Irwin

Publisher: Listening Library (Audio)

Date: July 2003

Duration: 3 hours 13 minutes

Summary:

As Frank and Joe investigate the mysterious disappearance of a college professor, they stumble upon a baffling secret in a complex network of caves.

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