I was burning with impatience to be off, but I dared not hurry. The "Italian" was evidently no fool. I lay still, apparently asleep, but keenly on the look-out. A few minutes later the "Italian" suddenly returned; evidently he meant to make sure I had no sort of association with Madame Gabrielle. Had I foolishly got up at once as soon as she went, his suspicions would almost certainly have been aroused. But I lay still, seemingly asleep, and, after a scrutinising gaze at me, he turned away, obviously satisfied. The course was clear now, always assuming that the rendezvous arranged between Bruno and the supposed Fontan was real and not pretended. But that I had to chance. As a matter of fact, the spot was well chosen for any business connected with the Huns' submarine activities. It was in a lonely spot, the road ran near the edge of the cliffs, and the coast at that point was studded with deep coves where a lurking U-boat could lie concealed without much fear of detection. During the afternoon I saw Madame Gabrielle leave for the station in the hotel omnibus, the "Italian" following in a cab. So anxious was he to make sure she had gone that, as I heard afterwards, he actually followed her to the train, and did not leave the station until after it had started. Probably his suspicions were lulled by the pretty little Frenchwoman thus leaving the field apparently clear for him; but, be that as it may, he later walked straight into our trap. CHAPTER THREE. BERLIN'S SECRET CODE. Towards sundown I wandered along the coast road for some three miles, until I caught sight of a great crooked tree, which stood remote from the road at the head of a narrow cleft, through which a steep track descended to the beach. I had very little doubt, when I had thoroughly examined the place, that it was an ideal spot for the Hun purposes. The pebbly beach sloped steeply into the water; it was evident that deep water came close in to the shore. The spot was far from any human habitation; the road was a lonely one, set back at this point at least a mile from the edge of the cliff. I knew that the superstitious Spaniards were not fond of being about the cliffs at night, and that if the U-boat pirates were really using the coast as a secret base, they would, if they took ordinary precautions, run very little risk of detection. My first task was to find a hiding-place. After some deliberation I selected a thick clump of brushwood which grew about half a mile from the point at which the track from the beach rose to the top of the cliff. Lying down at full length, I felt satisfied that I could see without being seen, and, pulling out the excellent pair of night-glasses with which I had taken the precaution to equip myself, I prepared for my vigil.