Isn't it time for someone to exercise their civic duty and assist me?
Mrs. Stevenson, the primary character, is an elderly woman who is unable to leave her bed. She is concerned that her husband has not yet returned home and phones his office to inquire about his whereabouts.
Is there anybody around?
She overhears two men arranging a murder on the phone. She wishes to apprehend the murderers before they carry out their crime.
Mrs. Stevenson attempts to enlist the assistance of a large number of individuals to thwart the murderer's plot. She enlists the assistance of the police and phone operators and tries to recruit a nurse.
sorry, wrong number.
While on the phone with the hospital, Mrs. Stevenson hears someone else in her house, which leads to the story's climax.
With the plan she overheard on the phone earlier, the man in her house kills her. It was all about her in the plan.
Mrs. Stevenson was assassinated. He picks up the phone and tells the person on the other end of the line, "Sorry, wrong number."