“To 0740.—From O. Meiszner—Headquarters Imperial Intelligence Staff. Order 0213 to do utmost possible with Clyde workers. Information will reach him from Holland by Route Number 6 regarding South Wales and dockers. Report all movements of troops to Dardanelles, also movements from Aldershot to Flanders. Nothing from 0802 at Portsmouth. Please inquire reason and reply: urgent. Are you on good terms with G.27 British Admiralty? Reply.”

The number “G.27” meant Charles Trustram, for as such he had been reported by Rodwell, and duly registered in the dossiers of the great spy-bureau in Berlin.

“Yes. On excellent terms with G.27. But he is not yet indebted to us,” he replied, swiftly tapping the instrument.

“He should be. Please see to it. His information is always good, and may be as extremely useful as that regarding the plot to entrap our Navy. I am sending Number 0324 to you as an American citizen. He bears urgent instructions, and is travelling via New York, and due in Liverpool about March 10th. He will report personally on arrival in London. End of message.”

“SS.” were the letters tapped out—three dots, succeeded by three more dots—and by it Dr Otto Meiszner, seated at the headquarters of German espionage in Berlin, knew that his friend had received and understood what he had transmitted from the heart of the Fatherland.

Rodwell, having replaced the cover over the instruments, lay back for a moment to think.

He knew that ere long the unseen rays of wireless would flash in code the news from Hanover away across Europe, to the Austrian station at Pola, on the Adriatic, reporting the departure of those troop-ships, which, after passing through the Straits of Gibraltar, would be at the mercy of the German submarines lurking in readiness in the Mediterranean.

Upon his hard mouth was an evil grin, as he rose, pushed the old chair aside and, striding into the adjoining room, joined the weatherbeaten old fisherman—the man who was held so dumb and powerless in the far-reaching tentacles of that terrible Teuton octopus, that was slowly, but surely, strangling all civilisation.