I began as a boy with artistic talent... as a visual artist... I thought that was what I'd become and in my late teens drifted into reading serious literature.
At first I was queasy; I'll never forget the sound of the scalpel cutting a body open. But it was so cool trying to work out how these people died.
It's the opposite journey from what I've usually done with films. I find it very easy to go from, say, a lit, pleasurable environment, like what you see outside there, to a very dark place. But the opposite journey, which is what this movie takes, is much more complicated.