"Did I not say the yacht had a queer feeling about her?" he said in a whisper.

I knew what he meant. The mashie had something besides rust on it now, something wet, moist and sticky.

Quarles glanced at the door of the galley as he put the paper on the table, careful to place it in the exact position in which he had found it; then he went quickly to the cabin aft.

On either side of a fixed washing cabinet there was a bunk, and in one of them lay the man we had seen on the green. The wound upon his head told to what a terrible use the club had been put since he had played with it that afternoon. He had been fiercely struck from behind, and then strong fingers had strangled out whatever life remained in him.

He was fully dressed, and there had been little or no struggle. His would-be sportsmanlike attire was barely disarranged, and even in death his pose was stiff, and his set face exhibited no emotion.

Quarles lifted up one of his hands and looked at the palm and at the nails. He let the light rest upon the hand that I might see it. Then he pointed to a straight mark across the forehead, just below the hair, and nodded.

We were back in the saloon-cabin again when I touched the professor's arm, and in an instant the torch was out. I had caught the sound of splashing oars.

"Put the club back under the seat," said Quarles, and then, with movements stealthy as a cat's, he led the way to the galley door. We were in our hiding place not a moment too soon.

Two men came hurriedly down the companion. A match was struck, but there was not a c.h.i.n.k in the boarding through which we could see into the cabin. It seemed certain they had not discovered our dinghy, and had no suspicion that they were not alone upon the yacht.

"It's plain enough. There's no other meaning to it." The speaker had a heavy voice, a gurgle in it, and I judged the heavier tread of the two was his. "Ninety feet, it says, captain; and we measured that string to exactly ninety feet."

"Feet might only refer to the four, and not to both figures," was the answer in a sharp, incisive voice.

"He said it was both."

"And I'm not sure he lied," returned the man addressed as captain.

"The distance was originally paced out no doubt, and pacing out ninety feet ain't the same as an exact measurement."

"We made allowances," growled the other.

"We'd been wiser to go on looking instead of coming back. You're too previous, mate."

"You didn't trust him any more'n I did."

"No; but he had the name right enough," answered the captain, "and the time--a year last February. I always put that job down to Glider.

Let's get back while the dark lasts."

"Come to think of it, it's strange Glider should have made a confidant of him," said the other.

"Sized him up, and took his chance for the sake of the missus,"

returned the captain.

"I'm not going back until I've seen whether he's got other papers about him."

"He chucked his clothes overboard," said the captain.

"He'd keep papers tied round him, maybe. I'll soon find out."

There was a heavy tread, and the opening of the door of the cabin aft. There was the rending of cloth, and the man swore the whole time, perhaps to keep up his courage for the horrible task.

"Nothing!" he said, coming back into the saloon-cabin. "Say, captain, supposing it's all a plant--a trap!"

There was a pause and my hand went to my revolver. If the suggestion should take root, would they not at once search the galley?

"He'd a mind to get the lot, that was his game," said the captain.

They went on deck, we could hear them stamping about overhead. Then came an oath, and a quick movement. I thought they were coming down again, but a moment later there was the soft swish of oars, followed by silence.

"Carefully!" said Quarles, as I fumbled at the galley door. "One of them may have remained to shoot us from the top of the companion."

He was wrong, but it was more than probable that such an idea had occurred to them. They had discovered our dinghy! It had been cut adrift, and the scoundrels had escaped, leaving us isolated on the yacht. I snapped out a good round oath.

"Can you swim, Wigan?" asked the professor.

At full tide the creek was wide, and the sullen, rushing water had a hungry and cruel sound.

"Not well enough to venture here, and in the dark," I said.

"And I cannot swim at all," said Quarles. "We are caught until morning and low-water. It's cold, and beginning to rain. With all its defects I prefer the cabin."

He went below and declared that he must get a little sleep. Whether he did or not, I cannot say; I know that I never felt less inclined to close my eyes. We had been trapped, that made me mad; and I could not forget our gruesome companion behind the door of the aft cabin.

There was a glimmer of daylight when Quarles moved.

"This is nearly as good a place to think in as my empty room at Chelsea, Wigan. What do you make of the mystery?"

"A trio of villains after buried treasure."

"Which they could not find; and two of them are scuttling away to save their necks."

"So you think the dead man yonder fooled them?"

"No. I think there is some flaw in the conundrum. By the way, why is a golf course called links?"

"It's a Scotch word for a sandy tract near the sea, isn't it?"

"But to an untutored mind, Wigan, especially if it were not Scotch, there might be another meaning, one based on number, for instance. As a chain consists of links, so a golf course, which has eighteen links.

It is a possible view, eh?"

"Perhaps."

"I see they have taken the paper," said Quarles; "but I dare say you remember the wording. S. B., that means south bank; N. B., north bank.

I have no doubt there is a pile with a chain on it, whether with nine or ninety links does not matter. It was on the green of the ninth hole that the man was practicing. For the word "link" subst.i.tute "hole,"

and you get a particular pile connected with the ninth hole, which, of course, has a flag, and so we get a particular direction indicated.

From the high-water line of mud on the north bank we continue this ascertained direction for ninety feet, and then we dig down four feet."

"And find nothing," I said.

"Exactly! There is a flaw somewhere, but the treasure is there," said Quarles. "The rascals who have given us an uncomfortable night evidently believed that the man they called Glider had told the truth; more, they had already put the job down to him, you will remember.

Now, how was it Glider gave his secret away to the man in yonder cabin? Obviously he couldn't come and get the treasure himself."

"A convict," I said, "who gave information to a fellow convict about to be released."