Since I have been a member of Parliament I have never seen him in the library without a shilling shocker in his hands. He brings them even into the sacred precincts of the House, and from the Government benches reads them concealed inside his hat. Once started on a tale of murder, robbery, and sudden death, nothing can tear him from it, not even the call of the division bell, nor of hunger, nor the prayers of the party Whip. He gave up his country house because when he journeyed to it in the train he would become so absorbed in his detective stories that he was invariably carried past his station.” The member of Parliament twisted his pearl stud nervously, and bit at the edge of his mustache. “If it only were the first pages of ‘The Rand Robbery’ that he were reading,” he murmured bitterly, “instead of the last! With such another book as that, I swear I could hold him here until morning. There would be no need of chloroform to keep him from the House.”

The eyes of all were fastened upon Sir Andrew, and each saw with fascination that with his forefinger he was now separating the last two pages of the book. The member of Parliament struck the table softly with his open palm.

“I would give a hundred pounds,” he whispered, “if I could place in his hands at this moment a new story of Sherlock Holmes—a thousand pounds,” he added wildly—“five thousand pounds!”

The American observed the speaker sharply, as though the words bore to him some special application, and then at an idea which apparently had but just come to him, smiled in great embarrassment.

Sir Andrew ceased reading, but, as though still under the influence of the book, sat looking blankly into the open fire. For a brief space no one moved until the baronet withdrew his eyes and, with a sudden start of recollection, felt anxiously for his watch. He scanned its face eagerly, and scrambled to his feet.

The voice of the American instantly broke the silence in a high, nervous accent.

“And yet Sherlock Holmes himself,” he cried, “could not decipher the mystery which to-night baffles the police of London.”

At these unexpected words, which carried in them something of the tone of a challenge, the gentlemen about the table started as suddenly as though the American had fired a pistol in the air, and Sir Andrew halted abruptly and stood observing him with grave surprise.

The gentleman with the black pearl was the first to recover.

“Yes, yes,” he said eagerly, throwing himself across the table. “A mystery that baffles the police of London.

“I have heard nothing of it. Tell us at once, pray do—tell us at once.”

The American flushed uncomfortably, and picked uneasily at the tablecloth.

“No one but the police has heard of it,” he murmured, “and they only through me. It is a remarkable crime, to, which, unfortunately, I am the only person who can bear witness. Because I am the only witness, I am, in spite of my immunity as a diplomat, detained in London by the authorities of Scotland Yard. My name,” he said, inclining his head politely, “is Sears, Lieutenant Ripley Sears of the United States Navy, at present Naval Attaché to the Court of Russia. Had I not been detained to-day by the police I would have started this morning for Petersburg.”

The gentleman with the black pearl interrupted with so pronounced an exclamation of excitement and delight that the American stammered and ceased speaking.

“Do you hear, Sir Andrew!” cried the member of Parliament jubilantly. “An American diplomat halted by our police because he is the only witness of a most remarkable crime—the most remarkable crime, I believe you said, sir,” he added, bending eagerly toward the naval officer, “which has occurred in London in many years.”

The American moved his head in assent and glanced at the two other members. They were looking doubtfully at him, and the face of each showed that he was greatly perplexed.

Sir Andrew advanced to within the light of the candles and drew a chair toward him.

“The crime must be exceptional indeed,” he said, “to justify the police in interfering with a representative of a friendly power. If I were not forced to leave at once, I should take the liberty of asking you to tell us the details.”

The gentleman with the pearl pushed the chair toward Sir Andrew, and motioned him to be seated.

“You cannot leave us now,” he exclaimed. “Mr. Sears is just about to tell us of this remarkable crime.”

He nodded vigorously at the naval officer and the American, after first glancing doubtfully toward the servants at the far end of the room, leaned forward across the table. The others drew their chairs nearer and bent toward him. The baronet glanced irresolutely at his watch, and with an exclamation of annoyance snapped down the lid. “They can wait,” he muttered. He seated himself quickly and nodded at Lieutenant Sears.

“If you will be so kind as to begin, sir,” he said impatiently.

“Of course,” said the American, “you understand that I understand that I am speaking to gentlemen. The confidences of this Club are inviolate. Until the police give the facts to the public press, I must consider you my confederates. You have heard nothing, you know no one connected with this mystery. Even I must remain anonymous.”

The gentlemen seated around him nodded gravely.

“Of course,” the baronet assented with eagerness, “of course.”

“We will refer to it,” said the gentleman with the black pearl, “as ‘The Story of the Naval Attaché.’”

“I arrived in London two days ago,” said the American, “and I engaged a room at the Bath Hotel. I know very few people in London, and even the members of our embassy were strangers to me. But in Hong Kong I had become great pals with an officer in your navy, who has since retired, and who is now living in a small house in Rutland Gardens opposite the Knightsbridge barracks.