Arnold Bourdon has a domineering wife named Elizabeth. When Elizabeth takes ill, she hires a lovely nurse named Joan. Arnold grows close to Joan, but she refuses to continue the affair as long as Arnold is married. The two plot to give Elizabeth a fatal doses of medication. Unfortunately, Elizabeth sees Joan kissing Arnold and fires her. Later Elizabeth hires another nurse. This one is an old woman in her sixties. Arnold asks the new nurse about Liz's medicine. The new nurse tells him that she will give her more medicine that the doctor recommended. Arnold, knowing that the dose will prove fatal, thanks the nurse and in his thanks reveals that she is his mother.

Lucy Baldwin wishes to marry her boyfriend Arthur. Unfortunately, her domineering mother believes that Arthur is only out for money and she opposes the marriage. When Lucy's mother falls ill, Lucy sees her chance. Lucy slips her a fatal dose of sleeping tonic and her mother dies. Lucy and Arthur are married and Arthur takes Lucy to visit his mother. Unfortunately, Arthur's mother is just as domineering as Lucy's. Since Arthur's mother is ill, Lucy suggests a dose of sleeping tonic to take care of the problem.