Antonio Margheriti's classic 1973 thriller gathers fearsome creatures and characters -- including a gorilla, a cat and a passel of menacing doctors and royals off their rockers -- in a gloomy castle owned by the House of MacGrieff. Presiding over this motley crew is an eerily removed couple (Jane Birkin and Serge Gainsbourg) whose motives are difficult to pinpoint. Renzo Palmer, Agostina Belli and Lionel Stander co-star.