Half a dozen times the car had been challenged in as many miles, but on each occasion the permit to travel was scrutinised closely, and as they went forward they saw in the sky, on the far-off horizon, the dull, red glare of the fires of war. They had left Charleroi on their right—the town of hardware, which the Germans had now surrounded, and intended on the morrow to reduce—and had now set their faces straight for the capital.

The pass which that morning Rigaux had received, on application to the headquarters at the Hôtel Cosmopolite, in Brussels, proved an open-sesame everywhere, for it was one of those cryptic passports which the German Empire had issued to all its spies, from the lowly to the wealthy.

That small piece of grey paper, stamped, signed, and countersigned, rendered its bearer immune from arrest, and provided safe conduct everywhere. What would his friends the Belgians say, or do, if they had known he had possessed such a document?

Time after time, on that dark, straight road between Charleroi and Brussels, the car was held up by men in spiked helmets, who covered both master and chauffeur threateningly with their rifles. But sight of that paper was magical. Arnaud Rigaux was bowed to with politeness, and urged onward with cautionary words to the next post.

Brussels lay thirty miles from Charleroi. They were now within the enemy’s lines, and were passing many burnt-out cottages and villages, some of the débris of which, strewn in the roadway, still glowed red in the night. Before them, in the dark, heavy sky, showed the glare of the lights of Brussels, the gay little city which now lay crushed and invested by the Teuton invaders.

The reflection of the light was not red, as in the case of a burning town. The Germans were committing no atrocities there, for the simple reason that, in the capital, they were beneath the eyes of the representatives of neutral powers. In the country it mattered not, and could easily be denied, but in Brussels the Commander-in-Chief had decreed that all should preserve a correct attitude and present the quintessence of German “culture.”

It was nearly one o’clock in the morning when at last, Rigaux having pulled his cap over his eyes, they passed the sentries outside the station of Uccle, and were allowed to proceed down the long, straight Avenue Brugmann and the Chausée to the end of the Avenue Louise.

Half the street lamps of Brussels were out, and no one was in the streets save German sentries at the corners, acting as policemen, their fixed bayonets glinting in the brilliance of the car’s headlights. Brussels, with her Civil Guard disbanded, was in the grip of the invader, who modestly demanded eight millions as its ransom.

The car turned into the small Place Louise, past the café in the corner, and De Boek’s Hotel so long a famous “English house,” turned to the left, and then ran along the tree-lined boulevard to where Rigaux lived.

There was now no secrecy of presence of the fair-haired German naval wireless operator, for the enemy had occupied the capital. Indeed, as soon as Arnaud Rigaux arrived home he met him in the hall, and accompanied him to the room in the roof, in which was that powerful wireless plant run off the electric-light main.