Darklight (1970)

Sinopsis

Sarah has been blind her whole life. She lives alone with her controlling mother Anne, the only family she has ever known. When Anne has an accident and fails to return home, Sarah miraculously regains her sight. But her joy and wonder are short-lived as she soon begins to realize that the world as she knows it is actually her worst nightmare. Hostage to Anne's insecurities, Sarah ultimately uncovers her mother's sinister plan to prevent her from ever leaving her side.