A young, beautiful woman marries a rich old blind man. While in the household she becomes aware of a plot to kill her elderly husband.
Acting
Sue Lyon's dead-eyed innocence masks pure calculation
Cinematography
Shadow-drenched mansion that breathes malevolence

Director
José María Forqué
Trivia, insights & behind the scenes
Sue Lyon was 27 playing ingenue here, four years after her notorious turn in Kubrick's Lolita—her career arc from exploited teen to exploiting woman is uncomfortably meta.
This Spanish-Italian co-production belongs to the 'giallo-adjacent' Euro-horror wave where American stars went to die beautifully on cheap sets.