Lust Weekend (1967)

Plot

David and Jane, a seemingly blissful couple, find their lives turned upside down when they are kidnapped by a clandestine sex cult headed by the enigmatic Persephone. As they endure unimaginable sexual torment, the couple is pushed to their limits, confronting their deepest fears and desires. Stripped of their freedom, David and Jane must navigate a nightmarish world where pleasure and pain intertwine, testing the very fabric of their relationship and their will to survive. The harrowing experience forces them to confront not only their captors but also the darkest corners of their own psyches.