"That is all," said the Captain; "and remember, you are to speak of this to no one."
"Yes, sir," said Schroeder, and withdrew.
Pachmann took a turn about the cabin, frowning heavily.
"What do you make of it?" he asked, at last.
"It seems plain enough," Hausmann answered. "Some one knocked Schroeder down and took his place at the door."
"Yes, yes," said Pachmann, impatiently. "But who was it, and what was his purpose?"
"His purpose, also, seems clear to me," said the Captain, quietly. "He wished to hear what was going on in my cabin."
"He was a member of your crew," said Pachmann. "I saw him—he was barefooted—he wore a uniform."
"Did you see his face? Would you know him again?"
Pachmann hesitated.