Les possédées du démon

A party of young adults goes to a castle for a party with games..... both the gambling and sexual sorts. But a psychic has predicted death for some of them. While the party proceeds, people start disappearing, even as the games go on.

I am expert in neither Italian giallo movies,nor those American horror films in which good-looking teenagers find themselves in an isolated location while some horror picks them off one by one, with none of them anxious to lead. Nonetheless, I can see the relation this movie bears with them, including classics of the genre like THE HAUNTING and THE SHINING. This shares the essential stupidity of the teen slasher flicks, because no one seems to consider leaving before whatever malign influence is killing them, whether through mysterious vanishments, or playing obsessively with a straight razor, with the creepy atmosphere maintained mostly through the music. With John Drew Barrymore, José Greci, and Gloria Milland.