Un Bianco Vestito Per Marialé (1972)

aka's: Spirits Of Death/A White Dress For Marialé

Mariale (Evelyn Stewart) has nightmares of her mother's murder at the hands of her father, who then committed suicide, which occurred when she was a child. One day Mariale decides to host a wild party with a group of friends, with disastrous results. Tensions grow as partygoers start dropping like flies, victims of brutal murders. Also stars Ivan Rassimov and Luigi Pistilli. (In Italian language, with English subtitles).