These houses, regrettably, don't have multi-million dollar add budgets to tell the world about their product. I was delighted. The primary themes in horror writing all involve violation. There's the physical violation of the bodies betrayal and disintegration, or spiritual violation where ethic and volition are subverted, there's even the story of metaphysical violation where the familiar suddenly becomes an illusion cloaking an alien and perverse reality. These are the elements, like the pipes of an organ, with which the horror writer picks out his or her tune.
Most writers confine themselves to a single, at most a few, notes.
Often to good effect. Occasionally, an author can play chords rather then single notes, more rarely still, a writer comes along who combines it all into a melody that lodges in your gut and leaves tremors long after the last note subsides.