Short Night of Glass Dolls (a.k.a Malastrana) is a 1971 giallo directed by Aldo Lado, filmed in Slovenia, the Czech Republic and Croatia, with cinematoraphy by Giuseppe Ruzzolini, and score by Ennio Morricone. It features Jean Sorel, Mario Adorf, Barbara Bach, and Ingrid Thulin.
One many films of the era that took cues from Rosemary's Baby, Sorel plays a foreign journalist whose girlfriend has gone missing, and in searching for her, uncovers an elite private club that is a front for a bizarre cult where the wealthy and powerful hold ritualistic orgies, and practice unholy rituals.