Bests & Worsts Reviews from Amazon

This is a horror book filled with nastiness, lack of empathy, and most revoltingly, the idea that it's reasonable and morally correct to torture and kill children in the name of possibly saving the human race. I forced myself to finish it to see if the ending had any redeeming qualities---it does not. A "teaser" for the second book begins with a brother and sister kidnapped after watching the murder of their parents. Apparently many adults, including respected reviewers, can maintain enough emotional distance to enjoy this sort of thing, but I am not one of them. And I certainly do not regard this as appropriate for children, or even teenagers.