In my time on Youtube, recently I have noticed that a lot of films we used to see on Creature Feature type programs when I was growing up in the 1960s are suddenly available on this venue in their entirety. I wonder if this has to do with a lot of these films going into public domain.
A friend mentioned CASTLE OF EVIL (1966). The end credits imply it was made for TV, but it may have had a brief theatrical distribution--don't know. This one had a couple of elements that reminded me of STRANGE PARADISE, notably sinister housekeeper Lupe (played by Shelley Morrison, who is best known now for her role as Rosario on WILL & GRACE) watching the other guests at the titular castle on a closed circuit TV system. I think most DS fans would enjoy this kind of thing, even though it's probably at best a 2 star movie; I know I had fun with it.
https://www.youtube.com/watch?v=Mxubi5RAm98Best, G.