The Devil Inside

I am an atheist.  In the real world, God and the Devil hold no interest for me.  And yet the horror movies that have lasted in my mind almost always have a religious element as both The Omen and Rosemary’s Baby haunt me to this very day.  Movies of this nature have an uncertainty that is more terrifying and unsettling than any monster or slasher that might be stalking teenagers in the dark.  The Devil Inside has no such uncertainty.