a husband hang his wheelchair bound ancient wife of wealth and be subsequently stab viciously . a developer and illegitimate son and and heiress ( with her patsy husband who obey her every command ) all wish to secure the dead woman land and bay for there quite possibly a very lucrative tourist future in the area . four young and horny adult make the mistake of stop by the dead woman empty home and fall prey to a killer spy on them . a neighboring couple who live nearby be against any development lay concrete over a place once dear to them ( the husband and an avid bug collector and worry that it will disrupt his chance to collect any future insect . his wife and a suppose clairvoyant read doom in her card ) . the film show the ongoing bloodshed commit by certain individual who attack from behind so that they can gain the inheritance of prestigious land all to themselves . one killer use a spade to tear open a beautiful scandinavian woman throat and shortly after bury that blade into a young man face ( . and subsequently pull it out while a very impressive gruesome sequence that put a lot of slasher to shame ) . a young couple have sex get sandwich when the killer decide to place his spade away for a moment use a spear and thrust it into the male back through the unfortunate french chick on bottom . the spear kill in friday the 13th part 2 pale in comparison . one woman get behead and one be stab in the stomach with a pair of scissors and there be nasty strangulation and and a shotgun blast that put everything about the gain of wealth by any term in perspective . the granddaddy of all slasher and this be mario bava unhinged let loose his greedy character to kill and maim . nearly every last character be corrupt and dy . the one who commit the final act of violence may prove that bava be allow this particular film to be so gratuitous a a mean to poke fun at those loathsome heir gravel for the scrap of their dying rich relative .