From Hecq in Paris I learned the full sequel of our adventure. No news of the affair ever leaked out to the public. But it appears that, owing to the discovery of the plans from Kiel in possession of the submarine’s captain and our wireless messages, French destroyers and British submarines, operating together, had within twelve hours cleaned out the pirates’ nest, sinking four more submarines and taking nearly sixty prisoners, most of whom are now behind barbed wire in Wales.


Chapter Four.

The Hidden Hand in Britain.

“Ah! my dear Hecq—you have now set me a very difficult task—very difficult indeed!” I found myself saying a few weeks later, after I had mastered, with a good deal of trouble, a formidable dossier which had been laid before me by the astute chief of the French Secret Service, now promoted, by the way, to be chief of the International Secret Service Bureau of the Allies.

Though the time had been short since my return from Spain, much had happened. At length “unity of command” in contra-espionage work had been realised as an absolute essential for securing a definite mastery over the incessant plottings of the Huns, and, with the cordial goodwill of all, Armand Hecq—whose brilliant abilities had given him a commanding position—had been unanimously chosen for the much coveted post.

“I admit it is extremely difficult,” said the short, grey-bearded, alert little man, knocking the ash from his excellent cigar, leaning back in his cane deck-chair, and regarding me with an amused smile. “It is so difficult that I confess I do not see my way at all clearly. For that reason I have put the matter before you.”

“There can be no doubt about the seriousness of the affair,” I said. “The French Service have done very well so far, and so have our friends in London. We are quite well aware that during the past few weeks there has been an amazing recrudescence of German espionage, both here and in England, and even Whitehall is seriously alarmed. There is good reason for believing that working drawings of the new British trench-mortars have, by some means, been smuggled over to Germany. How they got out is a complete mystery, for the control at all the ports has been stricter than ever. Yet van Ekker has managed to get through to Holland a message from Berlin which leaves very little doubt as to the fact. It is undeniably serious, for the new mortar is a wonderful production, and I happen to know that it was intended to be one of the grand surprises in the Allies’ spring offensive.”

Hecq grunted, and I paused. Then I went on saying: