i be a big fan of giallo movie and and lately i have become a fan of director bava and but this film be simply mediocre . this bava slasher be best remember for influence other movie in the subgenre ( the friday the 13th movie in particular ) and but the truth be that it be almost unwatchable . i have be very pleased with all the film make by bava that i have see and but this one have to be his bad movie . it be a tepid and overcomplicated and downright silly horror film . imaginative murder sequence aside and it be a real mess . it be confuse for no apparent reason . i be not sure what bava be try to do here and but it be a real letdown from a filmmaker that should know good . the ridiculous end be so bizarre that i wonder if bava be responsible for it . it be just an awful movie and so you have be warn . the uncut version of the film be title twitch of the death nerve and but i do not think a few minute of extra gore can improve such a sloppy make movie .