Suddenly, without giving us time to arrange our thoughts or prepare our phrases, our guest has left us; and his withdrawal without farewell or ceremony is in keeping with his mysterious arrival, long years ago, to take up his lodging in this country. For there was always an air of mystery about him. It was partly his Polish birth, partly his memorable appearance, partly his preference for living in the depths of the country, out of ear-shot of gossips, beyond reach of hostesses, so that for news of him one had to depend upon the evidence of simple visitors with a habit of ringing door-bells who reported of their unknown host that he had the most perfect manners, the brightest eyes, and spoke English with a strong foreign accent.