It was now that a thing came to pass which relieved my mind of a care only to increase our anxieties. When the skiff was a little way from the ship my Captain, looking back to where we lay, drew from his pocket his kerchief, which was a big and brightly-coloured kerchief, such as men love who follow the sea, and waved it in our direction as a signal of farewell, and, no doubt, of encouragement. Now, I cannot quite tell the train of thought which the sight of that action aroused in my mind, but I think that it was something after this fashion. The waving of that kerchief reminded me of the waving of a flag, and the moment that the word flag came into my mind I suddenly remembered what it was that I had been trying to remember through all those weary hours. As in a mirror I saw again the interior of Jensen's cabin and the beautiful face of Barbara, smiling as she stooped over her hideous standard. I saw again that vile black flag, and as the picture painted itself upon my brain the consciousness of our peril came upon me in all its strength. Without a doubt, the first thing to do was to tell Lancelot what I knew. It was too late now to tell the Captain. Even if he were not too far to see and understand such signals as we might make to him to return, it would not do to let Jensen and the rest of the crew know that we had fathomed their treachery. So I argued the matter to myself. It was certain that Jensen had no notion that I was any sharer in his dark secret, for though I could read in his face his dislike, I could see there no distrust of us. The first thing to be done was to break the bad news to Lancelot. I drew Lancelot aside and told him what I had seen. At first he was amazed and incredulous; amazed because I had not warned Captain Amber before, and incredulous because, when I explained my forgetfulness through my fall and the hurt to my head, he would needs have it that I imagined the whole matter. But I was so confident in my tale that I shook his disbelief--at least, so far that he declared himself willing to take all possible precautions. As matters stood we seemed to be in the better case. We had well-trained, well-armed men on our side; we had the supply of arms and ammunition in our care and under our guard; if the sailors were more numerous than we, they were practically unarmed. It was clear to both Lancelot and myself that the shipwreck, which had seemed so great a misfortune, was really the means of averting a more terrible calamity. We could not doubt that the intention of Jensen and his accomplices had been to seize the ship suddenly, taking us unawares when we were asleep, cutting most of our throats, very likely, and, after seizing upon the supply of arms, overawing such of the colonists and others as should be unwilling to convert the noble Royal Christopher into a pirate ship. CHAPTER XX A BAD NIGHT