"And that's all!" exclaimed the Doctor.
"That's all," was Shandon's reply.
"Well!" said Wall, "this Quixotic captain doesn't even so much as speak of coming on board now. I infer from this he doesn't intend to come at all."
"But this letter," said Johnson, "how did it get on board the vessel?"
Shandon was silent.
"Mr. Wall is right," replied the Doctor, picking up the letter which had fallen on the floor, and giving it back to Shandon.
"The captain won't come on board for a very good reason."
"And what is it?" inquired Shandon, eagerly.
"Because he is there already!" said the Doctor flatly.
"Already! What do you mean?"
"If he is not, how do you explain the arrival of the letter?"
Johnson nodded his head approvingly.
"It is not possible!" exclaimed Shandon. "I know every one of the crew; and, if your idea were correct, the captain must have been on board ever since the ship sailed. It is perfectly impossible, I say; for there is not a man among them I haven't seen more than a hundred times in Liverpool during the last two years. No, no, Doctor; your theory is altogether inadmissible."
"Well, then, how do you account for it?"
"Any way but that. I grant you that the captain, or someone employed by him, may have taken advantage of the fog and darkness to slip on board unperceived. We are not far from land, and the Esquimaux kayaks glide alone noiselessly between the icebergs. He might easily have managed to climb up the ship and deposit the letter. The fog has been quite dense enough for that."
"Yes, and dense enough, too, to keep anyone from seeing the brig; for if we could not notice an intruder coming on deck, it is not very likely he would be able to discover the vessel."
"I think that too," said Johnson. "What do you say, Mr. Shandon?"
"Anything you like, except that he is one of the crew," said Shandon, in an excited manner.
