Originally, I wanted this to be part 1 of a week long series involving this man ringing people's doorbells and killing them. The climax would have been him, sitting in an easy chair, watching television, when his doorbell rings. He answers the door, and finds another person, dressed exactly like him, holding a knife. (I.e., he was to meet the same fate he had metered out to others.)
Initially I thought it was a pretty funny idea.... but my wife vetoed it. Sometimes I listen to her advice, other times I don't (which has resulted in one of my favorite personal strips). This time, I listenned to her.