Listen to the Stinker Madness Episode
Watch the Trailer!
It's Evil Dead part III (only in Italy) and has absolutely nothing to do with it. It also has nothing to do with Hoff being Hoff nor Linda Blair being Linda Blair. Nor does it have to do with a plot that makes any sense. Nor does it have to do with being enjoyable.
Witchery (or La Casa 4 in Italy - thus the sequel to Evil Dead) is the baffling tale of a fallen actress whom lives in an island hotel and becomes a witch at some point and then attempts to perform a ritual to either close the gates to Hell or summon Satan to provide the seed for the anti-Christ. It's really impossible to tell what the hell (or not hell) is going on here. You've then got Hoff and Blair running around in the hotel trying to piece together what's going on while avoiding death and trying to escape.