The only reasons I watched "Witches' Brew" is that it is Lana Turner's last film and it was free to watch on YouTube. It turned out to be a strange but watchable movie...but a really weird film for Turner (who is 59, though she appears to be about 70).
A group of women have a strange 'hobby'. They've been practicing witchcraft in order to help their husbands' careers at the nearby university. One of them learns about this and it's not surprising that Professor Lightman (Richard Benjamin) is upset at his wife's behaviors...especially since he's a psychology professor. So, his wife (Teri Garr) wants to teach him a lesson and she removes all her charms on him...and soon his life starts falling apart. But the problem is MUCH worse than either anticipate, as the leader of this coven (Turner) is intent on doing something very evil. What? Watch the film.
This is a decent time-passer, though I wish they'd either chosen to make it much more serious or more of a comedy. Instead, it's a bit of both and could have been better. The ending is also really, really cheesy. Still, it's a one of a kind sort of movie and if you're looking for something different, it is very, very different.