The woman here is Sylvia Russell: power mad with set goals. In order to achieve those goals she is sadistically devoted to her son and daughter, able to possess and direct them. She subtly ruins her daughter's marriage by corrupting a servant girl and, then, uses her to compromise her son-in-law; slowly breaks her bumbling, unambitious husband's confidence...
Genres:
Sonia Dresdel as Sylvia Russell
Walter Fitzgerald as Arthur Russell
Emrys Jones as Terry Russell
Barbara White as Fenella Russell
Scott Forbes as Dr. Valentine Christie (billed as "Julian Dallas")
Cyril Raymond as Austin Penrose
Celia Lipton as Effie Holmes
Marjorie Rhodes as Mrs. Holmes
Joan Hickson as Miss Johnson
Lesley Osmond as Sally
Kynaston Reeves as Dr. Morrison
Gus McNaughton as Veterinarian
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