Margaret Lockwood is quite compelling as "Lydia" in this tense mystery of a woman who encounters a French gent "Paul" (Paul Dupuis), romance ensues and they fall in love. Throughout their courtship, though, she suffers from increasingly worrying dizzy spells that a doctor confirms will lead to blindness. Horrified, she flees from her beau and takes up in an abbey where she considers holy orders. Luckily, the abbess insists she rejoin the world and she rekindles her romance with the Frenchman, they marry and retreat to his father's chateau. Initially welcome, she soon senses that someone is out... read the rest.