1953 film by Roland af Hällström

1953 Finnish film by Valentin Vaala

1952 film by Valentin Vaala

Sylvi's child is run over by a bus, prompting her to drink poison. She goes blind in the process, causing her husband to lust after her much younger sister. After undergoing a dangerous operation to regain her sight, she hides her repaired vision behind dark eyeglasses, so she can spy on her sister and husband as they carry on their affair.