The narrator is shocked to find out that the man in the tunnel is actually Detective Tulkinghorn. He's not surprised, because he's known him for a long time. But the narrator doesn't know how to react to this news. He wonders what kind of man he was and how he could be so naive. He also wonders how he'll ever be able to live an ordinary life. The narrator's a little worried about Tulkinghand's reaction to the news, but then he realizes that he is his own compass and knows what's best for him. He asks the narrator to knock on the door of the room where the man is staying so that he can arrest