Having a little girl hacking her privates bloody with a crucifix, sticking her mother's face in it, and then turning her head 180 degrees around is without question the most horrific and transgressive set piece in American horror. That the sequence in
The Exorcist (1973) was staged in broad daylight added to the terror, as did the incredible subliminal sound work. This unequalled masterpiece remains a great influence on my work, and I'm always trying to achieve that sense of reality and suspension of disbelief.