I read this novel by Cormac  McCarthy a couple of years ago.  It sits on my bookshelf as one of the books I don't want to give a way. 

His descriptions are strong, the writing tight.  The plot is one I call "end of the world as we know it" scenarios.  This is one of the best books I've ever read. 

 The underlying theme of his book is a man's love for his son at all costs and what one will do to survive the unspeakable.