"I was in French uniform," said he, "and I had to play my part."

"And a nice mess you made of it," said I rudely.

"I am afraid that I did. That slip about the R.A.F. engine was unpardonable. But then how was I to know that the dear woman knew as much about aeroplanes as I did myself? She was like Desdemona at the feet of Othello, and, of course, I lost my head. You are as crazy about her as I am, with less excuse. Besides, I was on duty. Before Madame had spoken to me for five minutes, I was certain that she was not French. She spoke perfectly, but there was a little accent, a delightful accent, that told me she was Irish. That soupcon of a brogue which gives so delicate a spice to her English appears also in her French. My mother was an Irish woman, though I have never lived in Ireland. You know that all the Irish, especially those of America or of France, are watched most carefully by the police. Many of them hate the English, and spy upon us. When, therefore, I perceived that Madame, though she appeared to be French was by birth Irish, I recollected my instructions from Froissart. It was my duty to stick to her, to study her. If necessary to make love to her. It did not seem wholly disagreeable to me," he added dryly, "to make love to Madame Gilbert."

"I forgive you," said I, "though, from what I learn, you somewhat exceeded your instructions."

* * * * *

If I were not a most serious writer, this veracious history of Madame Gilbert and Captain Rust would tend to degenerate into comedy, possibly to reach the depths of farce. But, to one of my grave bent of mind, wasted deception, wasted energies, and, above all, wasted national money, excite rather to tears than to laughter. What a spectacle was this which I place before the reader! Here were two trusted members of the English Secret Service pitting against one another those treasures of intelligence, wit, and sensibility which they were employed—and paid—to exercise in the defence of their countries. It may be conceded that one of them was more or less honest. Rust, I am convinced, had persuaded himself—he has no marked ability or attractions of any kind that I can discern—that his duty impelled him to watch Madame with exceeding closeness of attention. That his strong inclinations marched with his duty may be allowed him as a privilege; the plea of duty was not, I believe, merely an excuse. But what can one say in defence of Madame, one who has stored within her little copper-covered head enough brains to furnish a brigade, say, of the Women's Emergency Corps? She had perceived that Rust was an English officer masquerading as a Frenchman, yet she could not have thought that he was a German spy. Why did she not ask him point blank what he was doing in that galley. She has never supplied me with a credible explanation, She pleads, with obvious insincerity, the instructions of Dawson, which in the most reprehensible way granted to her the vaguest of roving commissions. She parades her duty before me in the most tattered of rags.

Upon the following afternoon, when Madame Gilbert drove up to the Savoy in a taxi-cab at half-past four, a young man, in the uniform of a French officer, opened the door and handed her out. It was, of course, Captain Rust, who had waited palpitating upon the curb for some three-quarters of an hour. He led her to a small table which he had reserved for another charming duet of tea, cakes, and conversation.

At this second meeting, Madame bent herself to the deft cross-examination of Rust "Had the Captain Rouille joined St. Cyr as a cadet officer, or had he served in the ranks of the French Army?" He had served in the ranks, and broke into details of his training and garrison service which convinced her that he really had served. She became thoughtful. Rust, eager to show off his accomplishments, explained that he had been recommended for a commission and had joined St. Cyr. More details followed, all of a verisimilitude wholly convincing. Madame, who knew France and the French Army up and down, became more thoughtful and more puzzled. It was plain that Rust had really served in the ranks of the Army, and had been at St. Cyr. Yet he was an Englishman and an officer of the English Flying Corps! She asked further questions, innocent, flattering questions, seeking to discover what had happened to him after his course at St. Cyr. He did his best, but he was of inconsiderable agility of mind and deficient in imagination. He had been, he said, with Maunoury's Sixth Army, which, emerging from Paris in red taxis, had fallen upon the exposed right wing of von Kluck. His description was accurate enough, but the lavish details of former narratives were lacking. He had been officier de liaison on the Aisne; again the little intimate touches were lacking. He had joined the flying corps, but omitted to explain how he had learned to fly. It had been at Farnborough, but he could hardly admit this, and was, unhappily, quite ignorant of the French flying grounds.

Madame's quick mind began to see daylight. "How came it, my friend, that you were flying upon the coast when you suffered that accident, so terrible, and paralysed that poor brave heart of yours?" Madame asked the question in the most natural, sympathetic way. It was a facer for Rust, who regretted that he had been so communicative at that first meeting "I was lent to the Naval Wing," he explained, and avoided to particularise. By this time Madame had sorted out his service. She was quite sure that he had not been with Maunoury or upon the Aisne, but that in some manner, as yet not clear, he had left St. Cyr to pass into the English Army.

When in his turn Rust sought diffidently to penetrate the mystery surrounding Madame Gilbert, she overflowed with untruthful particulars. She resembles her master Dawson in this—it is unwise to believe one word which she wishes you to believe. Of her early life in Paris she spoke with emotion. She was the beloved only child of a French doctor—ah, the most learned and pious of men! He died early smitten by disease contracted during his gratuitous practice amongst the friendless poor. A most noble parent! Her mother, too, a saint and angel, had gone aloft shortly after seeing her daughter, Madame, happily married to a maker of caloriferes (anthracite stoves). "I am unworthy of those so noble parents," wailed Madame in broken tones. It was not until they were about to separate that Madame Gilbert herself threw him a bone of truth designed to test his appetite for curiosity. "I must fly," exclaimed she; "I am a woman tres occupee. I work, oh, so very hard, for my belle France and to avenge the death of my glorious husband." The blown-up stove maker did not seem to Rust to be a figure of glory, yet he forced himself again to express the deepest sympathy. "Yes," went on Madame, "I would avenge him. I work,"—she glanced round cautiously, and then whispered—"I work for the gouvernement anglais. I am an agent de police."