aka The Butcher of Binbrook, aka Necrophagus
How bad is it? It's very confusing and rather tepid.
Should you see it? I think so. If you hang in there, it can be rewarding.
Horror in Spain in 1971 meant no nudity and no gore and not much blood. This film's complex plot is filmed in a back-and-forth time frame, so you don't really know what's going on for most of the film and I think that's why it fails. Man returns home (to ancestral estate) to find his brother missing, his wife dead, people acting mysteriously... so he digs up his dead wife and gets attacked in the process. That's where things get complicated. There's a mad scientist, a lizard-man and a surprise ending. There's some technical flaws - the season changes a lot - but the plot does hold together if you make yourself think about it long enough.