spoiler probably the most influential of mario bava giallo thriller bay of blood set the stage form the mid 1970 and beyond for score of slasher movie that copy many of the scene that brava put into that film . wheel chair bound countess donari fedenica be suddenly grab by the neck by a shadowy figure and push off her wheelchair where she leave suspend in the air to be garrote to death . the camera slowly move upwards from the killer shoe to where we finally she his face who turn out to be the contess husband count donai filippo . before you can catch your breath the count be run through from behind with a blade leave him to bleed to death a his dead wife whom he just murder be hang suspend over him . this all happen in the first ten minute of the film without a single world of dialog . the movie continue on it gory way that when it finally over practically everyone in it end up brutally murder . the plot and if you can call it one and of bay of blood have to do with a valuable piece of land on a bay that a number of people what to convert into a vacation resort with the owner countess fedenica refuse to sell it to them . this be what lead to the orgy of murder in the movie with everyone try to get a hold of the land and not at all care just what they have to do to get it . it hard enough to follow the conniving and killing of those involve with the lake property but we have throw into the mix and for what just seem to be a reason to jack up the body count and a quartet of young people go down to the lake to have some fun . the first couple brunhida and her boyfriend robert separate from each other with brunhida go skinny dipping in the lake only to run and or bump and into the squid eat body of the murdered count filippo . run buff naked to the cabin where the other couple and denise and duke and and robert be stay brunhida be hack to death by an unknown killer who pop out of nowhere . robert be then quickly chop in half by the off camera psycho a he open the cabin door expect to see brunhilda . later both denise and duke totally oblivious to what happen and a their both in bed do it and get run through like a shish kebab with a spear by the same unknown killer . everyone that be introduce to in the film get brutally murder in some of the most grizzly scene even put into a movie and american or foreign and up until that time . there scene of strangle impale knife slash and decapitate that by the time the final act of murder happens and a good old fashion shot gun massacre and your just leave too numb and daze to even react to it . the film bay of blood be so blood splatter and off the wall that there not even a mysterious killer that the audience could try to identify and figure out who he and or she and be . in that the killer finally reveal himself and due to process of elimination and since almost everyone who be murder in the film have earlier end up murder somebody else make the point of the film be a whodunit totally moot . you really have to have both a strong and as well a empty and stomach to be able to sit through and watch bay of blood . the movie that more then any other horror film open up the door to the wave of horror or slasher and giallo horror or thriller like deep red and tenabre in italy and halloween and friday the 13th . as well a their many sequel and imitation that be soon to follow and be still with up even today .