"I am afraid not. It was perfectly dark, and I didn't even get a glimpse of his face. All that I could make out was that he was a big man." "We have several big men in the crew," said Lord Hastings. "But," said Frank suddenly, "I might be able to identify him if I got a look at his hand." "Why?" "I hit him with my revolver butt. I thought it was his head but it must have been his hand." Lord Hastings, who had been seated, stood up. "We'll see," he said. He walked to the door and summoned the chief gunner's mate. "Johnson," he said, "take a brace of automatics and summon every man of the crew here, coon, engineer and all. Don't let a single one get the drop on you." Johnson looked blankly at his commander. "Why--why----" he stammered. "There is a spy aboard, Johnson," said Lord Hastings calmly. "Hurry." The old man drew himself up and touched his cap. "Aye, aye, sir," he said quietly. "I'll bring 'em." He turned and marched rapidly away. "I happen to know he's not your man," said Lord Hastings with a slight smile, "for I was standing right beside him when I got your command to stop." "We had better let Johnson line them all up outside the door, and question each man separately, sir," said Frank. "A good suggestion," said Lord Hastings. They sat quiet for perhaps five minutes, and then Johnson's voice came from outside. "I've got 'em all here, sir." Frank arose and walked out the door. There stood the full crew of the ship with arms in the air, under the muzzles of Johnson's two automatics. "Send them in one at a time, Johnson," Frank ordered. "Aye, aye, sir," replied the old man, and waving his revolver at one he commanded: "You first." The first sailor was white of face and evidently badly frightened. He entered the room slowly and came to attention before Lord Hastings. "Your name?" demanded the commander. "Brice, sir." "Any other name?" "Yes, sir, Harvey, sir." "No; I mean were you ever known by another name; an alias?" "Well, sir," replied the sailor plainly confused, "no, sir, yes, sir. Before I enlisted I was known as Ryan, sir." "That's hardly German," said Lord Hastings. "And why did you change your name?" "A little trouble with the police, sir, if you must know." At this moment Frank, who had approached closely, suddenly spoke in German. "Your name?" he commanded. The sailor stared at him blankly. "He's not the one," said Jack. "His surprise is genuine enough. Call the next." "Stand over there in the corner," said Frank to the sailor. "Jack, you keep them covered as I line them up. We must be careful." "Send in another, Johnson," called Lord Hastings. A second sailor appeared in the door. His right hand was wrapped in a handkerchief! CHAPTER VI. THE SPY. Frank's hand dropped quickly to his revolver. "Stand over there," he commanded in a harsh voice. The man obeyed, and Frank approached and looked at him carefully.