"She's coming straight on for the island," remarked Copplestone, who had been narrowly watching the approaching vessel. "So straight that you'd think she was actually making for it."

"She'll be some craft bound for Kirkwall," said Vickers, pointing northward to the main group of islands. "And in that case she'll probably take this channel on our west; that fire, now! Come on all of you, and let's make as big a smoke as we can get out of this stuff."

The weather being calm and the grass and bracken which they heaped together as dry as tinder, there was little difficulty about raising a thick column of smoke which presently rose high in the sky. But Audrey, turning away from the successful result of their labours, suddenly glanced at Copplestone with a look that challenged an answer to her own thoughts. They were standing a little apart from the others and she lowered her voice.

"I say!" she murmured. "I don't think we need have bothered ourselves to light that fire. That vessel, whatever it is, is making for us. Look!"

Copplestone shaded his eyes and stared out across the sea. The steamer was by that time no more than two or three miles away. But she was coming towards them in a dead straight line, and as she was accordingly bow on, and as her top deck and lamps were obscured by clouds of black smoke, pouring furiously from her funnels, they could make little out of her appearance. Copplestone's first notion was that she was a naval patrol boat, or a torpedo destroyer. Whatever she was it seemed certain that she was heading direct for the island, at that very point on which the fugitives had been landed the previous night. And it was very evident that she was in a great hurry to make her objective.

"I think you're right," he said, turning to Audrey. "But it's strange that any vessel should be making for an uninhabited island like this. What—but you've got some notion in your mind?" he broke off suddenly, seeing her glance at him again. "What is it?"

Audrey shook her head, with a cautious look at Chatfield.

"I was wondering if that's the Pike?—come back!" she whispered. "And if it is—why?"

Copplestone started, and took a longer and keener look at the vessel. Before he could speak again, Vickers called out cheerily across the rocks.

"Come on, you two!" he cried. "She's seen us—she's coming in. They'll have to send off a boat. Let's get down to the beach, so that they'll know where there's a safe landing."