I read this book several years ago. I lost my copy when I loaned it to a friend but have recently reorderd it. I found it to be one of the best I had ever read. Mankind is on the brink of complete wipe-out. A family group bands together and decides to clone themselves to keep their race alive. But the clones take over and decide that the originals have to go. This book makes you think if mankind has the right to play god and are we ready for the results if and when we do.