The basic idea behind the novel is compelling. Demons rise from the ground every night, hounding and killing the ever diminishing human population. We follow the lives of three different protagonists at various points in time.
The plot of the novel isn't very strong. It's basically three coming of age stories and each of the three protagonists has a clear 'unique' skill that makes them superior to their surroundings. Once this becomes clear, the plot follows the same path a thousand novels have threaded before, and unfortunately the writing itself isn't strong enough to make things more than 'okayish' at any point.
A thing that stood out is that few people in this book seem to have any loyalty to marriage or other relationships. Sleeping around, or wanting to, is a common occurrence. Then again, there is an emphasis on baby making to counter the casualties suffered at the hands of the demons, so looser sexual morals fit right into that.
Average. By itself the novel is okay. As the first book of a series it isn't as there is barely any 'threat' setup for future novels. I'll still give the next one a try though.