aka The Bloody Monks (1988), aka Los Monjes Sagrientos, aka Monks of Blood, aka La Maldicion del Monasterio
How bad is it? Cheap and poorly constructed, this could've been good.
Should you see it? Only if you're a Russ Tamblyn fan.
This rarity is available only on very old VHS (I saw a Spanish language version online). In a prologue, an entire monastery gets killed off by a guy trying to satisfy a demon. Now, a Mexican psychology student researching his past ends up in that town and meets Russ Tamblyn, playing a magician, and his female assistant and, of course, there's a bit of a romance. Then there's people disappearing and the town blaming the strangers for it, rather than the zombie demon clergy. The girl's got a past and has creepy nightmares, Tamblyn does some tricks and is generally amusing, there's some terrible acting, lighting that switches from too dark to glaring, a sub-plot with buried gold, another one with a witch and some very poor make-up gore effects. There's way too much plot, yet the film drags interminably - and the film's only 75 minutes long.