The Fourth Kingdom by Alexandra and Joyce Swann is a thriller/mystery that successfully contrasts the lives of truth loving scientists whose goal is to make the world a better place for all with self-serving egocentric scientists whose goal is their own aggrandizement. It demonstrates how frightening a world it would be if human cloning were allowed and how God is in control and evil is self-destructive.
It is also a very good reminder of historical fact about the brutality of the Third Kingdom in trying to eliminate the Jews and anyone else who didn't fit into their idea of perfection.
I recommend this book to anyone who is interested in science, history, world hunger, or just likes a good thriller.