NEW YORK: Percussion Publishing is providing Vault 21-12, our latest thriller, free to readers via the Kindle Unlimited program for the month of August.
Kindle Unlimited is currently available free to the public for a 30-day trial. During that time, over 800,000 books can be accessed. Thereafter, the charge is $9.99 a month. Free subscription details can be found here. Prime members automatically qualify for Kindle Unlimited services.