This show is one of my favorite programs, though it's been awhile since I listened to and I'll have to listen again. I say it's one of my favorites because I don't have a great memory yet this one stuck with me. My initial observations include great acting, good dramatic theme and excellent sound effects. The bickering between the husband and wife while trapped in a snowstorm was well done and the "b" story of a killer on the loose built the drama. From the onset, we knew that our characters were going to meet the killer and the drama created by the bloody kitchen added to the effect. I don't recall if the blood was ever explained. As for the third wheel, he took his life in his hands by letting these people think he was the killer and he probably deserved a malpractice suit. 