"I see," said Jack. "Not a bad idea."

"It was offered by the wireless operator," continued Captain Griswold, "although he offered it unconsciously."

"Explain," Jack requested.

"Well, Harrington thought he heard his instrument clicking. He figured it was you, whom we had just sighted. He broke through the Germans on deck and dashed below. He locked himself in his room and began talking to you. Three of the enemy went after him and broke in the door, but I guess he had told you enough by that time."

"I'd like a word with this Harrington," said Jack. "He is a brave man. Where is he?"

"Dead," said Captain Griswold quietly.

Jack jumped to his feet

"Dead?" he repeated.

"Yes. After the Germans broke in the door, they overpowered him, tied him and then brought back on deck. Said the German commander: 'I'll show you how we treat men who defy us.' He stepped back several paces, drew his revolver and fired. Then three of the enemy threw the body into the sea. That's when we jumped them, for it was more than we could stand."

"Then who answered the wireless when I called a moment ago?"