A supervirus threatens to wipe out the human race.

The only hope for the future is a cure hidden inside the human hybrid Ryder Stone. Created in a lab and brutalized, betrayed and hated by humans, Ryder yearns for freedom. On the outside, a group of human genetic purists want him dead.

When Katie Marsh, a brilliant young geneticist, discovers his secret, she must fight to protect Ryder, gain his trust, and convince him to save humanity before the purists destroy them all.

If you enjoy fast-paced and thrilling stories featuring genetic engineered humans, you'll love KC May's incredible story of humanity and courage.

Named one of the top 15 books of 2010 by The Journal of Always.
#1 Bestseller in Science Fiction at Amazon US Aug 2011

This book was originally published under the title The Venom of Vipers.