DEVIL'S NIGHTMARE aka LA NUIT LA PLUS LONGUE aka LA NUIT DES PÉTRIFIÉS - 1971

Sept touristes en perdition se retrouvent dans un château ou ils rencontreront une succube qui les fera périr un à un selon leurs péchés, les sept péchés capitaux. It's all about a group of tourists who become lost during a trip, are directed to an old castle which offers room and board. A succubus proceeds to seduce each tourist according to their own personal weaknesses, the seven deadly sins.