“It seems to me to have only one drawback, Hopkins, and that is that it is intrinsically impossible. Have you tried to drive a harpoon through a body? No? Tut, tut, my dear sir, you must really pay attention to these details. My friend Watson could tell you that I spent a whole morning in that exercise. It is no easy matter, and requires a strong and practised arm. But this blow was delivered with such violence that the head of the weapon sank deep into the wall. Do you imagine that this anaemic youth was capable of so frightful an assault? Is he the man who hobnobbed in rum and water with Black Peter in the dead of the night? Was it his profile that was seen on the blind two nights before? No, no, Hopkins, it is another and more formidable person for whom we must seek.”

The detective’s face had grown longer and longer during Holmes’s speech. His hopes and his ambitions were all crumbling about him. But he would not abandon his position without a struggle.

“You can’t deny that Neligan was present that night, Mr. Holmes. The book will prove that. I fancy that I have evidence enough to satisfy a jury, even if you are able to pick a hole in it. Besides, Mr. Holmes, I have laid my hand upon my man. As to this terrible person of yours, where is he?”

“I rather fancy that he is on the stair,” said Holmes, serenely. “I think, Watson, that you would do well to put that revolver where you can reach it.” He rose and laid a written paper upon a side-table. “Now we are ready,” said he.

There had been some talking in gruff voices outside, and now Mrs. Hudson opened the door to say that there were three men inquiring for Captain Basil.

“Show them in one by one,” said Holmes.

The first who entered was a little Ribston pippin of a man, with ruddy cheeks and fluffy white side-whiskers. Holmes had drawn a letter from his pocket.

“What name?” he asked.

“James Lancaster.”

“I am sorry, Lancaster, but the berth is full. Here is half a sovereign for your trouble. Just step into this room and wait there for a few minutes.”

The second man was a long, dried-up creature, with lank hair and sallow cheeks. His name was Hugh Pattins. He also received his dismissal, his half-sovereign, and the order to wait.

The third applicant was a man of remarkable appearance. A fierce bull-dog face was framed in a tangle of hair and beard, and two bold, dark eyes gleamed behind the cover of thick, tufted, overhung eyebrows. He saluted and stood sailor-fashion, turning his cap round in his hands.

“Your name?” asked Holmes.

“Patrick Cairns.”

“Harpooner?”

“Yes, sir. Twenty-six voyages.”

“Dundee, I suppose?”

“Yes, sir.”

“And ready to start with an exploring ship?”

“Yes, sir.”

“What wages?”

“Eight pounds a month.”

“Could you start at once?”

“As soon as I get my kit.”

“Have you your papers?”

“Yes, sir.” He took a sheaf of worn and greasy forms from his pocket. Holmes glanced over them and returned them.

“You are just the man I want,” said he. “Here’s the agreement on the side-table. If you sign it the whole matter will be settled.”

The seaman lurched across the room and took up the pen.

“Shall I sign here?” he asked, stooping over the table.

Holmes leaned over his shoulder and passed both hands over his neck.

“This will do,” said he.