Years ago I asked this question about a movie, but I cannot locate it.

There's a movie about a devilish monster that appears out of nowhere. If I remember correctly, he starts out as a kind of a dot and then expands into this horrid looking beast who goes after certain people...I can't remember why. I think he 's controlled by someone.

'The movie is B&W and may be from the 50s or 60s.

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