Endless Night (1972)

Yves' upbringing is heavily influenced by his alluring blonde aunt, whose tumultuous love life shapes his understanding of desire. As he grapples with his burgeoning sexuality, he becomes a voyeur, quietly observing her passionate affairs. The situation takes a dark turn when he witnesses her brutal murder at the hands of her violent husband. This traumatic event deeply scars Yves, ultimately transforming him into a killer driven by a twisted obsession with sex and revenge, as he navigates the complexities of his darkened psyche in adulthood.