He sat for a time in brooding silence; the officer made no attempt to rouse him, but the gaze he bent upon the man's lowered head was grave and pitiful. Abruptly, in a level and toneless voice, Lanyard resumed:
"In order to regain my home I had to go round by way of England and Holland. I crossed the Dutch frontier disguised as a Belgian peasant. When I reentered Louvain it was to find … But all the world knows what the blond beast did in Louvain. My wife and little son had vanished utterly. I searched three months before I found trace of either. Then … Lucy died in my arms in a wretched hovel near Aerschot. She had seen our child butchered before her eyes. She herself…."
Lanyard's hand, that rested on the table, clenched and whitened beneath its begrimed skin. His eyes fathomed distances immeasurably removed beyond the confines of that grim cellar. But he presently continued:
"Ekstrom had accompanied the army of invasion, had seen and recognized Lucy in passing through Louvain. Therefore she and my son were among the first to be sacrificed…. When I stood over her grave I dedicated my life to the extermination of Ekstrom and all his breed. I have since done things I do not like to think about. But the Prussian spy system is the weaker for my work….
"But Ekstrom I could never find. It was as if he knew I hunted him. He was seldom twenty-four hours ahead of me, yet I never caught up with him but once; and then he was too closely guarded…. I pursued him to Berlin, to Potsdam, three times to the western front, to Serbia, once to Constantinople, twice to Petrograd."
The officer uttered an exclamation of astonishment. Lanyard looked his way with a depreciatory air.
"Nothing strange about that. To one of my early training that was easy—everything was easy but the end I sought…. En passant I collected information concerning the workings of the Prussian spy system. From time to time I found means to communicate somewhat of this to the Surété in Paris. I believe France and England have already profited a little through my efforts. They shall profit more, and quickly, when I have told all that I have to tell….
"Of a sudden Ekstrom vanished. Overnight he disappeared from Germany. A false lead brought me back to this front. Two days ago I learned he had been sent to America on a secret mission. Knowing that the States have severed diplomatic relations with Berlin and tremble on the verge of a declaration of war, we can surmise something of the nature of his mission. I mean to see that he fails…. To follow him to America, making my way out through Belgium and Holland, pursuing such furtive ways as I must in territory dominated by the Boche, meant much time lost. So I came through the lines to-night. Fortune was kind in throwing me into your hands: I count upon your assistance. As an ex-agent of the Secret Service you are in a position to make smooth my path; as an Englishman, you will advance the interests of a prospective ally of England if you help me to the limit of your ability; for what I mean to do in America will serve that country, by exposing the conspiracies of the Boche across the water, as much as it will serve my private ends."
The officer's hand fell across the table and closed upon the knotted fist of the Lone Wolf.
"As an Englishman," he said simply—"of course. But no less as your friend."