It begins with mood and atmosphere. It is ignited by tension. The body feels flushed, heart pounding, hands sweating, belly tickling, thoughts racing. The participant runs every scenario and worries about his ability to perform under stress. Soon, it closes in on him and there comes the moment where it all culminates in the great releasing reward. Yes, sex and horror go hand-in-hand. It amazes me how rarely moviemakers really get this concept. Oh yes, we have the sex-crazed teenagers in “Halloween” and other slashers, but there are few movies that know how to play the sexual tension with the horror to show how they complement one another. When you think about, there is nothing more vulnerable than the intimacy and naked exposure of a sexual encounter and there is nothing more vulnerable and naked-feeling than something terrifying hunting you down. Both involve a certain amount of helplessness and handing oneself over to fate, trying to control that which is not controllable, and the de...