For my part I was by no means certain that this gabelou (as our men alluded to her opprobriously) was after us at all. There were nautical difficulties in such a view which made me express the sanguine opinion that she was in all innocence simply changing her station. At this Dominic condescended to turn his head.

“I tell you she is in chase,” he affirmed moodily, after one short glance astern.

I never doubted his opinion. But with all the ardour of a neophyte and the pride of an apt learner I was at that time a great nautical casuist.

“What I can’t understand,” I insisted subtly, “is how on earth, with this wind, she has managed to be just where she was when we first made her out. It is clear that she could not, and did not, gain twelve miles on us during the night. And there are other impossibilities. . . .”

Dominic had been sitting motionless, like an inanimate black cone posed on the stern deck, near the rudder-head, with a small tassel fluttering on its sharp point, and for a time he preserved the immobility of his meditation. Then, bending over with a short laugh, he gave my ear the bitter fruit of it. He understood everything now perfectly. She was where we had seen her first, not because she had caught us up, but because we had passed her during the night while she was already waiting for us, hove-to, most likely, on our very track.

“Do you understand—already?” Dominic muttered in a fierce undertone. “Already! You know we left a good eight hours before we were expected to leave, otherwise she would have been in time to lie in wait for us on the other side of the Cape, and”—he snapped his teeth like a wolf close to my face—“and she would have had us like—that.”

I saw it all plainly enough now. They had eyes in their heads and all their wits about them in that craft. We had passed them in the dark as they jogged on easily towards their ambush with the idea that we were yet far behind. At daylight, however, sighting a balancelle ahead under a press of canvas, they had made sail in chase. But if that was so, then—

Dominic seized my arm.

“Yes, yes! She came out on an information—do you see, it?—on information. . . . We have been sold—betrayed. Why? How? What for? We always paid them all so well on shore. . . . No! But it is my head that is going to burst.”

He seemed to choke, tugged at the throat button of the cloak, jumped up open-mouthed as if to hurl curses and denunciation, but instantly mastered himself, and, wrapping up the cloak closer about him, sat down on the deck again as quiet as ever.