The locations I think we should be using are all kinda — not post-apocalyptic, because that would be a little cliché — but the lands, the marshes, the English countryside: we want to be looking at that.
There was a sense of — what I always go for is emotion — a sense of foreboding [in the script].
It was a very uneasy sense of imminent dread as I was reading it, all the way through it.
So it just seemed to make sense thematically, as well as tonally and atmospherically.