With a mysterious gap in her memory, the wife (Patricia Neal) of a wealthy London businessman (Curt Jurgens) becomes determined to learn the truth behind the blindness she's suffered for years. Is it the result of a physical injury or is it caused by a severe emotional trauma? And, is it somehow linked to the strange relationship that's developed between her husband and her younger sister (Samantha Eggar)? Ian Bannen and Beatrix Lehmann co-star in this gripping drama. 93 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono; theatrical trailer.