The main character of the novel, Bill Dawson, finds himself drawn into a strange story in which he will have to impersonate another person. In the process of the hoax, he quickly realizes that the stake in this game is his own life. The novel is a game between the author and the reader, in which the author’s notes play an important role, covering possible wrong directions in the thoughts of a detective lover. Ideally, before the end of the penultimate chapter, the reader should indicate, if not all nine correct answers, then at least the most important of them.