Terence Young's masterful thriller follows a newly sightless woman who becomes the unwitting target of three criminals ransacking her home in pursuit of a heroin-laden doll. Featuring powerhouse performances from Audrey Hepburn, Alan Arkin, and Richard Crenna, this adaptation of Frederick Knott's stage play transforms domestic vulnerability into unbearable suspense. Young's direction expertly exploits the protagonist's blindness as both narrative device and source of mounting dread, creating one of cinema's most psychologically intense home invasion narratives.