I know that this description sounds a lot like “Motel Hell,” but I am positive it is not. I saw this black-and-white movie in the mid-70s, but it was an old movie even then. A young woman goes to stay at a farm or a resort (to gain weight or lose weight, maybe?), and realizes that the caretakers are butchering people for meat. Somehow, she defeats them, and the final scene is of the freezer or meat locker, where we see the heads of the two dead caretakers. At the very last second, one of the heads winks at us.
“The Folks at Red Wolf Inn”(1972)? Also known as Terror House.
Also known as “Terror at Red Wolf Inn” and who the heck knows what else.
It’s on YouTube in six parts. I tried to watch that once, but gave up because it’s awful. But I went back now to check the ending. That’s it. Not in black and white.
It’s not black & white, but the climax is blue tinted.
Holy cow, you guys are amazing. This is definitely it, and now I wonder if I just watched it on a black and white television. Consider this question solved!
Solve goes to Livinghead, assist to Will!
Thanks Will and thank the OP for the response!