At half-past five on the morning of the 23rd of June, the Cunard liner Aurania left New York for Queenstown and Liverpool. She was the largest and swiftest passenger steamer afloat, and on her maiden voyage she had lowered the Atlantic record by no less than twelve hours; that is to say, she had performed the journey from Sandy Hook to Queenstown in four days and a half exactly. Her measurement was forty-five thousand tons, and her twin screws, driven by quadruple engines, developing sixty thousand horse-power, forced her through the water at the unparalleled speed of thirty knots, or thirty-four and a half statute miles an hour.

Since the outbreak of the war it had been found necessary to take all but the most powerful vessels off the Atlantic route, for, as had long been foreseen, the enemies of the Anglo-German Alliance were making the most determined efforts to cripple the Transatlantic trade of Britain and Germany, and swift, heavily-armed French and Italian cruisers, attended by torpedo-boats and gun-boats, and supported by battle-ships and depôt vessels for coaling purposes, were swarming along the great ocean highway.

These, of course, had to be opposed by an equal or greater force of British warships. In fact, the burden of keeping the Atlantic route open fell entirely on Britain, for the German and Austrian fleets had all the work they were capable of doing nearer home in the Baltic and Mediterranean.

The terrible mistake that had been made by the House of Lords in negativing the Italian Loan had already become disastrously apparent, for though the Anglo-Teutonic Alliance was putting forth every effort, its available ships were only just sufficient to keep the home waters clear and the ocean routes practically open, even for the fastest steamers.

The task, therefore, which lay before the Aurania when she cleared American waters was little less than running the gauntlet for nearly three thousand miles. The French cruiser which had been captured by the Andromeda, thanks to the assistance of the Ithuriel, had left Brest with the express purpose of helping to intercept the great Cunarder, for she had crossed the Atlantic five times already without a scratch since the war had begun, showing a very clean pair of heels to everything that had attempted to overhaul her, and now on her sixth passage a grand effort was to be made to capture or cripple the famous ocean greyhound.

It was by far her most important voyage in more senses than one. In the first place, her incomparable speed and good luck had made her out of sight the prime favourite with those passengers who were obliged to cross the Atlantic, war or no war, and for the same reasons she also carried more mails and specie than any other liner, and this voyage she had an enormously valuable consignment of both on board. As for passengers, every available foot of space was taken for months in advance.

Enterprising agents on both sides of the water had bought up every berth from stem to stern, and had put them up to auction, realising fabulous prices, which had little chance of being abated, even when her sister ship the Sidonia, the construction of which was being pushed forward on the Clyde with all possible speed, was ready to take the water.

But the chief importance of this particular passage lay, though barely half a dozen persons were aware of it, in the fact that among her passengers was Michael Roburoff, chief of the American Section of the Terrorists, who was bringing to the Council his report of the work of the Brotherhood in the United States, together with the information which he had collected, by means of an army of spies, as to the true intentions of the American Government with regard to the war.

These, so far as the rest of the world was concerned, were a profound secret, and he was the only man outside the President's Cabinet and the Tsar's Privy Council who had accurate information with regard to them. The Aurania was therefore not only carrying mails, treasure, and passengers, but, in the person of Michael Roburoff, she was carrying secrets on the revelation of which the whole issue of the war and the destiny of the world might turn.

America was the one great Power not involved in the tremendous struggle that was being waged. The most astute diplomatist in Europe had no idea what her real policy was, but every one knew that the side on which she threw the weight of her boundless wealth and vast resources must infallibly win in the long run.