Originally published in 1971, there's probably nothing new that I can say about this one. Instead, I want to point out that I absolutely love how Matheson accomplishes so much with so little. For example, take the following sentence, "There was something in there, without a doubt, something terribly malignant." It wouldn't cause most to blink an eye but when Matheson writes it, it becomes sinister, the imagination runs wild and I breathed a sigh of relief when the story moved on.
Hell House definitely isn't for the squeamish or easily offended due to all of the perversions but it's definitely worth your time.