A White Dress for Marialé (1972)

When Marialé is a little girl, she sees her father murder the two lovers and then shoot himself in the head. About 30 years later, she lives in a mansion and has mental problems. She invites a number of friends and one by one they become murdered.
Romano Scavolini
Ida Galli, Ivan Rassimov, Luigi Pistilli, Pilar Velázquez, Ezio Marano, Giancarlo Bonuglia, Gianni Dei, Franco Calogero, Gengher Gatti, Edilio Kim, Carla Mancini, Shawn Robinson, Bruno Boschetti
tt0068272