I saw this on a double-bill with Murders in the Rue Morgue back in the early 70s. According to IMDb, it was released in America in 1971, but I think I saw it later. Anyway, that year saw the release (in the US, at any rate) of two of the absolutely BEST horror movies of the decade: Daughters of Darkness and The House That Screamed. The comments are right about House being about sexual repression: whew! If you've only seen this on TV, YOU HAVEN'T SEEN IT!!!! Not that there's anything especially graphic in the film, but you just won't be able to "get" it. I keep hoping it'll come out on DVD: it is, in Spain, but I don't understand Spanish, and it doesn't have subtitles! VSOM sells it on tape, but it's p&s and just too dark. Why don't we start a write-in campaign to Blue Underground??? I just wanted to add my two cents: RUNDBAUCHDODO's comments are right-on. I will say this about the greenhouse murder: it's pretty creepy when the girl enters, but it's a real shocker when the murderer STANDS UP RIGHT IN FRONT OF THE CAMERA!!!! Maybe it was done before, and it's probably been done since, but it's the first time I saw it and I've never forgotten it. In fact, it surprises me how much of this whole movie I remember -- and remember correctly!