“I am not a murderer, Sir Andrew, believe me,” he said; “you need not be alarmed. As a matter of fact, at this moment I am much more afraid of you than you could possibly be of me. I beg you please to be indulgent. I assure you, we meant no disrespect. We have been matching stories, that is all, pretending that we are people we are not, endeavoring to entertain you with better detective tales than, for instance, the last one you read, ‘The Great Rand Robbery.’” The Baronet brushed his hand nervously across his forehead. “Do you mean to tell me,” he exclaimed, “that none of this has happened? That Lord Chetney is not dead, that his Solicitor did not find a letter of yours written from your post in Petersburg, and that just now, when he charged you with murder, he was in jest?” “I am really very sorry,” said the American, “but you see, sir, he could not have found a letter written by me in St. Petersburg because I have never been in Petersburg. Until this week, I have never been outside of my own country. I am not a naval officer. I am a writer of short stories. And tonight, when this gentleman told me that you were fond of detective stories, I thought it would be amusing to tell you one of my own--one I had just mapped out this afternoon.” “But Lord Chetney _is_ a real person,” interrupted the Baronet, “and he did go to Africa two years ago, and he was supposed to have died there, and his brother, Lord Arthur, has been the heir. And yesterday Chetney did return. I read it in the papers.” “So did I,” assented the American soothingly; “and it struck me as being a very good plot for a story. I mean his unexpected return from the dead, and the probable disappointment of the younger brother. So I decided that the younger brother had better murder the older one. The Princess Zichy I invented out of a clear sky. The fog I did not have to invent. Since last night I know all that there is to know about a London fog. I was lost in one for three hours.” The Baronet turned grimly upon the Queen’s Messenger. “But this gentleman,” he protested, “he is not a writer of short stories; he is a member of the Foreign Office. I have often seen him in Whitehall, and, according to him, the Princess Zichy is not an invention. He says she is very well known, that she tried to rob him.” The servant of the Foreign Office looked unhappily at the Cabinet Minister, and puffed nervously on his cigar. “It’s true, Sir Andrew, that I am a Queen’s Messenger,” he said appealingly, “and a Russian woman once did try to rob a Queen’s Messenger in a railway carriage--only it did not happen to me, but to a pal of mine. The only Russian princess I ever knew called herself Zabrisky. You may have seen her. She used to do a dive from the roof of the Aquarium.” Sir Andrew, with a snort of indignation, fronted the young Solicitor.