“Very well. What’s your name?”

“Farini Enrico,” he replied, placing the surname first, in Italian style; “born at Ponte Moriano, Provincia di Lucca. The signore knows Tuscany—does he?”

“Yes,” I answered. “Wait for me near that house; but don’t let anyone see you are watching. I’ll return as soon as possible. Lose no time.” And I hurried away after the old man in the long ulster and his white-faced companion.

They had gained upon me considerably; but I soon overtook them, satisfied that in any case my watch upon the house would not be relinquished. I had lived sufficiently long in Tuscany to be able to read the Tuscan character, and I saw by the young man’s manner that he was not the usual contadino who comes to London to grind an organ, but from his speech of quite a superior class. He wore his felt hat slightly askew, and beneath a rather forbidding exterior I detected that he possessed a keen sense of humour. His black, shining eyes laughed merrily when he mentioned his own village—a village I knew quite well, a few miles beyond the quiet, aristocratic old town of Lucca, and I saw that the very fact that I had spoken to him in his own tongue had at once secured him my servant. Italians are such children when you know them thoroughly!

I had little time for reflection, however, for the traffic of Oxford Street, although the night was wet, was considerable; and, while having some difficulty in keeping the pair in sight, I was also compelled to exercise a good deal of precaution in order to avoid recognition as the man who had encountered them in Harpur Street.

On they went at the same pace, heedless of the drenching rain, turning into Regent Street, then into Maddox Street, and across Grosvenor Square into Grosvenor Street, the centre of the West End. Suddenly, however, to my amazement, they ascended the steps of one of the best houses in the latter street; and the man, taking a latch-key from his pocket, opened the door with an air of proprietorship, and a moment later both disappeared from view, the door closing behind them.

Such a house, a veritable mansion in one of the most expensive thoroughfares in London, was the very last place I would have suspected to be their abode.

I repassed, and saw that it had been recently repainted, and presented a smart and handsome exterior. Flowers bloomed in the window-boxes, and a striped awning was spread over the portico. I noted that the number was 62A, and the next house I recognised as Viscount Lanercost’s. The manner in which the shabby-genteel pair had slipped into the house showed secrecy, and yet the confident way in which the old man opened the door betrayed that he was no stranger to the place.

Again I had recourse to the pages of that book of revelation, the London Directory—which I obtained in a bar at the end of Park Lane, frequented mostly by gentlemen’s servants—and there I found that the occupier was the Earl of Glenelg, the wealthy Scotch peer and ex-Under-Secretary, whose name had long been familiar to me, as no doubt it was to my readers, through the columns of the newspapers.

Could it be possible that the man in the shabby ulster for whom that mysterious signal had been placed in the window was actually his lordship himself?