From the DVD case: It sits there, shrouded in mist and mystery, a nesting place for living evil and terror from the dead. It’s Hell House. Roddy McDowall heads the cast of this exciting chiller about four psychic investigators and the dark, brooding mansion they themselves call “the Mt. Everest of haunted houses.” It’s already destroyed one team of researchers. Now this brave quartet ventures in for another try at unraveling its secret. (1973,color)
Mark says: The Legend of Hell House is another film adapted from a novel by Richard Matheson (Duel, The Incredible Shrinking Man). Matheson wrote the screenplay himself, though many of the explicit scenes from his novel (Hell House) had to be toned down to receive its PG rating. This was particularly true of the sexual scenes.
Matheson had high hopes in regards to assembling a cast:
At one time I had in my mind a dream cast of Richard Burton and his wife Elizabeth Taylor to play the two mediums, Rod Ststeiger and his wife Claire Bloom to play the professor and his wife. Just after they made The Legend of Hell House people began making the really classy, A-picture-type horror films, starting with The Exorcist, so if I had held onto Hell House a few more years, it might have gotten that kind of treatment, too.