aka Curse of the Dead, aka Doctor maniac, aka Kill, Baby, Kill
How bad is it? It's a slow, cheap, old-fashioned creepfest.
Should you see it? No. It has one very funny moment, but it takes forever to get there.
I think the overall poor ratings for this film come from people who expected that it would have zombies, but it's bad enough on its own (de)merits. A scientist on a South African plantation is performing experiments on animals, believing that their souls can be removed from their bodies. Eventually, he starts in on his family and fiancee. Almost nothing happens for more than an hour and then there's a climax that's quite remarkably silly, involving the spirit of a disembodied horse. Fast-forwarding might be a good idea.