The Purple Cloud: A Last Man Classic!

A "Last Man" Classic! A world-encompassing purple cyanide cloud passes over Earth and annihilates all living creatures except Adam Jefferson. He embarks on an epic journey across a silent and devastated planet, an apocalyptic Robinson Crusoe traveling back from the Arctic where he survived the cloud. Upon his return to civilization he realizes that he is the sole survivor, and with no society to restrict him he becomes an all-powerful insanely destructive juggernaut in this post-apocalyptic world. He revels in deliberately razing entire empty cities with explosives. In his saner moments, his travels take him to Istanbul, where he discovers a young female survivor. He must consider the point, should mankind continue, should he try to reproduce? The ending is one of the most realistic of the 'last man' post-apocalyptic novels ever written.