[Elhaym]

I watched a movie when I was much younger that left an impression on me but sadly didn't leave the name of the movie in my memory. This movie would probably have been made in the late 80s or early 90s.

What I do recall is that it is a horror flick (obviously), and involved changes in time influencing future actions and possibly some sort of possession by demonic forces.

I recall the movie had a scene in the beginning with the husband coming home and opening the door (maybe he rung the door bell because he forgot his keys, I don't recall), with his wife standing there holding a T ruler. When he asked her why she had a T ruler, she replied that it was for protection, and the scene was humorous if somewhat bizarre.

Some demonic stuff starts happening, I remember their teenage daughter takes a boy into their garage or something and kills him there. The mother is the main hero of the movie (I think) and is able to reverse all of the death and destruction somehow, completely undoing all the bad stuff. At the end of the movie, just as she is thinking everything is ok, she hears the doorbell ring (or knock, or whatever.) She approaches the door with a T ruler in hand, and opens it, only to see her husband there, who asks her why she's holding. Ta da! Perhaps this is all set to repeat itself, or perhaps not.

So, anybody know what movie this was? I'm dying to see it again. I've looked through tons of lists of movies and can't seem to find it.