"Well, simply because, if we tell the Head, he won't let us go."

Patch seemed to ponder this statement for a minute. "Yes," he said at last, "that's true enough. The Head would forbid it, and get some blundering bobby to take the job on. Look here—who will go?"

"The lot of us," said Jack decisively. "I suppose Silver's on, aren't you?"

"Sure thing," said Silver quietly. "We can get a skiff out of the sheds. I have the key—and sneak out along the edge of the bay. It wouldn't do if we were to strike out boldly for Dog-face! We'd be spotted pretty quickly. But what are our plans?"

"We'll see, comrade. First of all, we'll have to reconnoitre. Then we'll make sure of our attack. I've got an idea—we won't go until about two o'clock in the morning. If they've got a watch out at that time, then all I can say is, they're pretty cautious!"

And so, finally, it was arranged. The conspirators went to bed early that night—and they awoke early the next morning. At five minutes past one, to be precise, the little band of four cautiously left the school grounds and presently came to the river, where they launched a skiff on the softly-lapping water.

It was an adventure that was as wine to the spirit of Jack Symonds and his pals. They were strung to a high pitch of keenness, by the thought of Billy Faraday and what was happening to him; and if there was a trace of nervousness, the darkness of the night and the danger of the venture might have excused it.

Out they rowed into the bay, hugging the shore closely, as they turned in the direction of Dog-face. The skiff crept along almost without sound; there was the ruffle of parted waters, and the subdued grumbling of the oars in the row-locks. Despite this, they made progress; and soon the black bulk of Dog-face lay blotted against the stars.

"Softly now," said Jack Symonds. "Quit rowing—we'll drift there. The tide is just right, fortunately. Easy."

In breathless silence the skiff drifted down on Dog-face. There was much starlight, and there was no knowing whether they were being observed or not. At any moment there might ring out a challenge, or perhaps they might be fired upon, and no questions asked. It was a nerve-testing time.