On a certain cold evening in January, and just as the Scotch night-mail was about to start for the north, a stranger drove up to Euston and alighted, and was glad enough to escape from the chill draughts of the echoing station into the glow and warmth and comfort of a sleeping-car. He was a man of means apparently; for one half of this carriage, containing four berths, and forming a room apart, as it were, had been reserved for himself alone; while his travelling impedimenta—fur-lined coats and hoods and rugs and what not—were of an elaborate and sumptuous description. On the other hand, there was nothing of ostentation about either his dress or appearance or demeanour. He was a tall, thin, quiet-looking man, with an aquiline nose, sallow complexion, and keen but not unkindly gray eyes. His short-cropped hair was grizzled, and there were deep lines in the worn and ascetic face; but this may have been the result of an exhausting climate rather than of any mental care, for there was certainly no touch of melancholy in his expression. His costume was somewhat prim and precise; there was a kind of schoolmasterish look about the stiff white collar and small black tie; his gloves were new and neat. For the rest, he seemed used to travelling; he began to make himself at home at once, and scarcely looked up from this setting of things to rights when the conductor made his appearance. ’Mr. Hodson, sir?’ the latter said, with an inquiring glance. ’That’s about what they call me,’ he answered slowly, as he opened a capacious dressing-bag covered with crocodile-hide. ’Do you expect any friends to join you farther along, sir?’ ’Not that I know of,’ was the answer—and a pair of dark-blue velvet slippers, with initials worked in gold, were fished out and thrown upon the seat beside him.