I Am Legend by Richard Matheson

 

This is one of those novels which have been translated to the screen again and again, not least in The Last Man on Earth, starring Vincent Price, which I may well have blogged. And yet, in novel form, the premise is truly allowed to blossom. We have possibly the last person on Earth who has not become a vampire, and we really explore the minute detail of how he adapts, survives and reacts to the strange and nightmarish new world in which he finds himself,

And interiority is crucial here. We are privy to Neville's thoughts, feelings, despairing binges, bleak memories, and why he acts as he does, far more so than any film version could ever make us feel, by virtue of the medium itself.

And so (SPOILERS) the twist at the end comes, if anything, as even more of a shock, as it has real moral force. Ruth makes not only Neville confront the moral horror of the fact that Neville has been gleefully staking living vampires as well as dead ones... and it turns out that a treatment is possible which will give them reasonably normal lives. Neville, with whose deeds the reader has been complicit, is in fact a murderer, and must die.

This is a surprisingly brief novella, and it focuses narrowly on the worldbuilding, the twist, and one everyman character. But what it does it does very well indeed.