Sorry I could not find a thread on this exact topic, though I'm almost sure one exists. I'm a huge fan of Matheson's book Hell House but have never seen the cinematic adaptation even though I love the haunted house genre. I am thinking of giving the upcoming Blu-Ray a blind buy, but must wonder how does a book with strong graphic themes that would merit a strong R rating translate to a 1973 film with a PG rating at the time? Seems the source material must have been substantially diluted and sanitized? Is it worth it? I'm thinking a psychological horror on the level of the original The Haunting (1963)?