The man with whom I shook hands heartily was about thirty-five, tall, spruce, clean-shaven, and merry-faced, wearing a black overcoat and peaked cap that gave him the appearance of a naval officer. Cross-channel passengers know Henry Hammond well, for he is one of the most popular officials in his Majesty’s customs, always courteous, always lenient to the poor foreign immigrant, but always stern wherever the traveller seeks to conceal contraband goods or that thing forbidden, the pet dog; conscientious in his duty in examining the baggage of incoming passengers, and always a gentleman—different, indeed, from the prying douaniers of our neighbours.

With his assistant it was his duty, turn by turn, to cross from Dover by the midday service, and on the return of the steamer from Calais—the vessel on which we were now aboard—to examine all the light baggage and affix a kind of perforated stamp as certificate of examination.

As a constant traveller I had had many a pleasant chat with him during trips across. In the wildest winter tempest in Dover Straits he remained unruffled, merely turning up the collar of his overcoat, and remarking that the weather was not so bad as it might be. But nearly all of you have had your baggage examined on the boat on your return from the Continent; therefore, no doubt, you know Mr Hammond, and have answered his question whether you have “anything to declare.”

“Why, Mr Kennedy,” he cried, as he took my hand, “this is a surprise! I saw in the paper the other day an announcement that you were returning to live in England, but did not expect you across just yet. Look at them,” he added, casting his glance around. “Big crowd this afternoon: Cook’s and Gaze’s weekly returns from Switzerland.”

“Yes,” I laughed. “You’ll be busy all the way over, I suppose.”

“No, I’ll be done in three-quarters of an hour or so; then we’ll have a chat. My assistant is already getting on with hand-baggage forward.” By this time we had cast off, and were creeping slowly down the harbour.

“Well, Hammond,” I said confidentially, “I’m in a dilemma;” and taking him aside into one of the unoccupied deck-cabins I briefly explained the circumstances of The Closed Book, and described its outward appearance and binding.

“By Jove!” he exclaimed, deeply interested; “it almost beats your own romances, Mr Kennedy. I’ve just been reading your last. Neither my wife nor I could put it down till we’d finished.”

“You see, the woman ought to be on board this boat; but I’ve not yet seen her. I’m just going in search of her. But if you should come across any one answering the description I’ve given, you might tell me at once.”

“Of course. You want to get this extraordinary book back again?”