"There's something suspicious about that smack," said he. "She's got no sail up; I can see no one on board. She's lying just as if she was at anchor."

The daylight was now spreading fast. Already the sun was rising. They were drawing quite near to the "Marigold," which--as Captain Cookson had pointed out--appeared to be deserted and riding lazily at anchor.

As we know, it had been Crouch's intention to run the smack down, to send her to the bottom. Such a light craft would stand but a small chance in a direct collision between herself and the heavy ocean tramp.

However, as they drew near to the "Marigold," it became apparent that once again they had been foiled by Rudolf Stork. Strange--almost miraculous--as it must have seemed at first, the fact remained that Stork and every one of his companions had vanished as completely as if they had been spirited away.

A surprise has this effect upon us all: we lose, for the moment, our natural powers of reasoning; we cannot, as it were, put two and two together. They could not explain this seeming miracle, until, as in a flash, they remembered the U93. There could be no question that Stork and those who were with him had been taken on board the German submarine.

Thus, as at a stroke, were all Captain Crouch's hopes dashed to the ground: his well-laid plans had gone astray. If Stork was already on board the submarine, he had accomplished the very task for which he had been sent out into the North Sea. The U93 had been warned of the coming raid.

There is an old proverb which reminds us that the worm will sometimes turn; and this is exactly what happened now. Crouch had set forth in the "Kitty McQuaire" with the idea of bringing a German spy to his account. At first Stork had been the fugitive; but before the full disc of the round morning sun was visible above the skyline, the tables had been completely turned.

The U93 rose once again from out of the water like some weird, remorseless and formidable monster that lives and has its being in the unfathomable depths of the sea. Almost immediately, two men made their appearance in the conning-tower; and one of these was the commander, whilst the other was Rudolf Stork. By a strange coincidence, there was not another ship in sight, except a trawler, far away to the south.

The U93, in accordance with the design of the very latest submarines, was armed with two quick-firing guns. With both of these, without a moment's delay or hesitation, the Germans opened fire upon the "Mondavia," raking her with shrapnel from end to end.

There was no question now as to who commanded the ship; for the very first projectile burst immediately above the bridge, so that both Whisker and Cookson--who were standing side by side--were struck, the former falling heavily to the ground, whereas Captain Cookson, carrying a hand to his shoulder, cried out that his collar-bone was broken.