This Was a Woman

The woman that was here is Sylvia Russell, who is a bit power mad and has some set goals. In order to achieve those goals she is sadistically devoted to her son and daughter, able to possess and direct them; 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, finds in her husband's executive friend the man she desires, and then poisons her husband in her own manner.