“The police believe that the problem is difficult. It is difficult because it is strange. But an ordinary answer lies in the unusual facts – not outside of them. In a mystery like this, we do not ask, “What has happened? We asked, “What has happened that has never happened before? So have I solved the mystery easily.”
I looked at Dupin in silence. I could not believe what he said. “I am now waiting,” he continued, “for a person. Maybe he is not the person who killed the ladies. But I know that he was part of the crime. The man will come very soon. We will have to keep him here. I have guns. You know how to use one …”
