# Voice From the Cave

An audiobook by Mildred A. Wirt Benson, read by LibriVox volunteers (3 h 59 min, English).

Penny Parker and her father go on vacation accompanied by a mysterious woman and end up engrossed in a hunt for foreign spies! (Summary by Amanda Leung )

[Listen](https://invisiblenetwork.ai/books/librivox/20013)
[Read the book](https://invisiblenetwork.ai/books/gutenberg/34832/read)