I am Legend by Richard Matheson
Listened to on CD while driving to and from work. I actually read the graphic novel a few months earlier so it was interesting to read the original.
Robert Neville has witnessed the end of the world. The world's population has been obliterated by a vampire virus, though Neville has somehow survived. As he toils to make sense of it all and protect himself against the hounding vampires who seek out his life force, Neville embarks on a series of projects to discover the source of the plague and hopefully put an end to the vampires.
Set in a future 1976 we see Neville try to survive and not loose the part of himself that makes human. But in the end is he just as much a monster as he tries to kill the vampires. It is a powerful novella and still relevent today though it was written in the 1950's.