The Kindle edition of In The Presence Of My Enemies is currently available for free from Amazon.
This book written by Gracia Burnham is the true story of the year she spent with her husband as hostages in the Philippine jungle.
If you don't own a Kindle, you can download this book for free by downloading Amazon's reading app to your computer or mobile device.
Note: Be sure to check the price before downloading; the price may change without notice.
Thanks to Money Saving Mom for the link!