"That's so. But we have now to count with Trustram. If he wilfully deceived me regarding those two transports leaving Plymouth, then he certainly suspects. And if he suspects, his suspicions may lead him in the direction of Sainsbury--see?" "Yes. I quite see. You scent a further danger!" "No, not exactly," was his vague reply, an evil smile upon his lips. "With the exercise of due precaution we need have nothing to fear--as long as Sainsbury's mouth is closed by the law--as it must be in a day or two." "But you don't mean to come down here again for some time, do you?" "No. For the next week or two we must trust to other channels of transmission--Schuette's wireless at Sydenham, perhaps, though that's far from satisfactory." "Hark!" exclaimed the woman, as they heard someone at the outer door. Both listened. There was a grating sound like that of a key--as though the door was being unlocked. This surprised them, and they exchanged inquiring glances. There was a sound of heavy footsteps, causing them both to hold their breath. Next instant the door of the bedroom was unceremoniously flung open, revealing upon the threshold two burly men in hard felt hats and overcoats presenting service revolvers at them. It was a striking scene. The woman screamed loudly, but the man, who had sprung to his feet to find himself thus cornered, stood firm, his face blanched, and his eyebrows contracted. "And pray what's the meaning of all this?" he demanded, in hoarse defiance. A second later, however, he saw that behind the two men who entered the room to place himself and his companion under arrest, were three other persons. One was a naval officer in uniform, evidently from the Admiralty Intelligence Department, while the other two were men well-known to him--namely, Sir Houston Bird and Charles Trustram. "Your clever game is up, Mr Rodwell!" exclaimed Trustram, entering the room with the naval captain, whose gaze fell at once upon the telegraph instruments mounted on the old sewing-machine in the corner. "Yes," exclaimed the officer. "And a pretty big game it seems to have been--eh? So you've been working a cable across to Germany, have you? We've had suspicion that the cable laid to Wangeroog might have had a second shore-end, and, indeed, we started dredging for it off the Spurn only two days ago." "Mr Rodwell," said Trustram, addressing him, as the two detectives were searching him for firearms: "You thought you were very clever. You betrayed me once, but I took very good care that all the information I gave you afterwards should be such as you would work for England's advantage, and not for yours. In one case last week, when your masters acted upon my information, we were able to bag six of your submarines in the Straits of Dover within forty-eight hours. So you see my game was a double one," he added, with a smile of satisfaction.