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...
Sonia Dresdel
Walter Fitzgerald
Emrys Jones
Barbara White
Scott Forbes
Cyril Raymond
Celia Lipton
Marjorie Rhodes
Joan Hickson
Lesley Osmond
Kynaston Reeves
Gus McNaughton