A serial killer is executed by lethal injection. But was the injection actually lethal? This is a zombie novel and contains all the things a successful zombie novel should; nasty zombies that not only bite but spew a maggot filled contagious substance; protagonists you respect and admire,and an IN YOUR FACE ending.
Can you imagine anything worse than a zombie whose conscious mind is still functioning but has no control? Totally aware of what he is doing and what has happened to him but unable to do anything to stop it? This book is that and much more.
What really makes the story successful in my opinion, is that these zombies start out as man made. As the story progresses you are left wondering who the monsters really are. Zombies or mankind?