This, then, is dystopia.
A short, but compelling story that will make you think and question the world you've come to know and trust. Actually, no, let me correct myself. It is not so much a story as a subtle revelation of the fragile existence of mankind which throws a harsh light on just how much we think we know and how much we actually do, on how everything we think or say or do has consequences but how largely ignorant we remain of that fact, and how we still fear that which is unknown and to what extent we let this fear govern us.
Here's one of the better reviews for this book - http://www.goodreads.com/review/show/344378539 .. I have nothing else to add to it.
Please do pick up Genesis, if you are the kind that likes a book that makes you think and turn everything you think you know, upside down. If you aren't the kind, pick it up anyway. Afterall, "A society that fears knowledge is a society that fears itself."