Forget all the mental images you may have of this book; forget the film; in fact, forget men-eating plants altogether. Because this book is not about any of those things.
What it is about is hard to pin down. About how thin the veneer of civilisation is; about the dangers of global weaponry; about how different people would react to an apocalypse; about how society itself is best organised, or why societies are organised the way they are. What is certain is that, at various points in reading this book, you are forced to ask yourself questions to which there are no correct answers. And that is the mark of truly classic fiction.
What's more, this is a terrific story, impeccably told. A true pageturner that had me desperate to know what happened next, and yet wishing it never to end. And enough twists and turns to pack it full of incident. I'm now off to read Wyndham's other works, but I recommend you buy this now.