Count Mino Alberti lives in a huge, four-story white mansion with his horrible mother, Countess Alberti and the overworked, long-suffering family maid, Marta. Father died in a tragic accident a few years back and now he’s at the mercy of dear old mom, who has a sick idea of what motherhood should entail. She’s miserable and controlling, and has a special peephole built into her wall where she can keep an eye on her son as he entertains female guests in his bedroom. Marta the maid, secretly pines for Mino and bitterly detests any woman striking her employers fancy. Both women conspire to drive away Mino’s beautiful fiancé Laura Campi by being unbelievably bitchy to her. When that doesn’t work, they arrange for a little “accident” to occur by cutting the brake lines on Laura’s car, which leads to a fatal crash over a rocky embankment into the ocean. Strangely, Laura’s body is never recovered. After an altercation, the Countess fires Marta. Infuriated, Marta knocks the old crone down a flight of stairs (gouging out her eye in the process!), strangles her to death and makes it look like an accident. —Thebloodypitofhorror.blogspot.com
Read my extensive review of this underrated proto-giallo gothic chiller. http://worldweirdcinema.blogspot.com/2010/05/third-eye-italy-1966.html?zx=28271a5560b7f16