largely cite a the inspiration behind carpenter halloween ( 1978 ) and cunningham friday the 13th ( 1980 ) and the hundred of countless other gory slasher movie and this be an entertaining horror film from mario bava and who be probably the great of the italian genre director . he be also an incredibly talented cinematographer and a you can tell with many clever and artistic touch and how his camera loom for some time over the tranquil lake front set in between the very graphic murder sequence . this be an art concept while couple savagery and the ill of man ( greed and lust ) with the beauty and serenity of nature and with loud shriek occasionally pierce through the calm . it a shame that the late copycat fail to realize the potential found here . there a high enough body count and creative kill to entertain most fan of these type of movie . if you try to deeply analyze the plot and you will be somewhat disappointed . but if you can appreciate this a a colorful piece of the macabre and you will love it . there be several jump out of your seat moment ( the best be a surprise await a man who open his front door ) and a truly nasty neck slash . there also some brief nudity . the end be a huge surprise and but definitely more than a little hard to swallow . then again and this sense of playful parody help to diffuse some of the gore . if you love horror film and i recommend this one .