Mrs.Stevenson the character: she tries to get a hold of her husband
setting: her bedroom
what happened next was that she got in the phone with two other people
while she was on the phone with the wrong people
after she heard the murder plot she called the operator and told them to hack their phone and they wouldn't after she told them everything and Duffy asked if she knew if she was the one going to die at that
then, awhile after that she heard something and tried calling the police
During the resolution, the murder has killed Mrs. Stevenson. He picks up the phone and says, "sorry, wrong number" to the person on the phone line