In view of all the facts this was not very convincing, but all the same it was distinctly cheering.

The blank night wore to a kind of grey over the sea, though the land was still in deep shadow. Across the grey ran the coils of the black causeway. The light was coming fast now and for the first time Eben lost his equanimity of spirit. He was in haste to have them gone out of the Tower.

"Take Mrs. Stair down to the landing-place, sir," he pleaded, "take her to the little cove where the boat will come in. They may be on the shell-track any time now."

And as he spoke both Stair and he heard and recognized the loud rattle of a ship's anchor chain.

"There," he cried, "off with you! There is not a moment to lose. Ah, there they come. But that is only the first of them. I can easily stop these. Out at the back door! The wicket in the wall is open. Keep on through the hollow and you will find the boat ready. Do not wait for me. I have my own life arranged for. Do not fear for me!"

He hustled them out with a haste which left them no time for explanation. The men who were hastening across the causeway had less than a mile to run. It was, however, by no means easy going, and it would take them at least ten good minutes. Stair took Patsy down to the Shell Bay by the safest path, and even before they reached it they could hear the beginning of a fusillade in their rear. The boat from the Good Intent was already on the way, rowed by four sturdy seamen, yet it seemed to them both as though she would never arrive. They looked behind them, expecting every moment to see a rush of men come at them over the crown of the island.

Stair could stand it no longer. He must see what was going on, and he mounted the rough sides of the little heathery knoll called quaintly Ben Rathan. Patsy would not be left behind and he found her at his side. She could, in fact, have been there long before him.

But what they saw struck them dumb.

In a rough trench at the island end of the shell causeway, and quite clearly evident beneath them in the young light of the morning, were three figures, two of them obviously dummies, but with guns at their shoulders and hats on their shapeless heads. Bounding hither and thither, now along the top of the trench, now rising breast-high to fire was a man so like Stair Garland that Patsy had to look again at the blond giant beside her to make sure. Then they understood.

It was the ex-spy clad in the cast-off suit which Stair had taken off the first morning after their coming to the island. Stair's well-known bonnet with its tall feather was on Eben's head, and after every shot or two, he waved it in the air and shouted to the assailants to come on. The half-dozen sappers who had tried the first rush were now lying flat behind stones, and one lay bunched up as if wounded. The false Stair ran to and fro firing the muskets over the shoulders of his auxiliary potato-sacks. Then he shouted again defiantly, and leaping to the cliff's edge where he stood clear against the sky-line, he fired again. Patsy could see the mud-and-water spurt up from where the bullet struck. From the mainland a score more of men took the pathway, keeping as widely apart as possible. These were Colonel Laurence and his first reinforcement. Up went the feathered bonnet in the air as Eben dived back into his rude trench.