The Road by Cormac McCarthy (2006)

This dark book is set in an apocalyptic landscape, where the Man and the Boy (no names are given, nor needed) take up on the Road, trying to get to a warmer (or maybe a better) place in front of the approaching winter. Surviving on scarce finds of food, getting away from others turned into cannibals, driven mainly by love. Even in this deadly place, there is a glimmer of hope. Makes you think about just how thin the society's fabric is ...