“Then I will remain here and watch De Gex’s departure,” he said.

“Yes. But be very careful of yourself,” I urged. “Keep your revolver handy, for you never know when an attack may be made upon you. These fellows, though great men in the eyes of the world, employ desperate characters to do their dirty work.”

“I’m quite alive to that fact, Hugh,” replied my friend. “But we won’t give up till we punish those responsible for poor Miss Tennison’s state—will we?”

“No, we won’t,” I declared determinedly. “Of course we may be on a wrong scent, but something seems to tell me that we are pretty hot on the trail. The assassin Despujol would never have been employed by them if they did not hold us in dread.”

“Your journey to Montauban will prove whether you are right, Hugh,” he said, and then, after arranging that he should follow Suzor should De Gex leave without him, and that he should at once wire me word to the Poste Restante at Nîmes, I left, and returning to the hotel packed my suit-case and later met the bald-headed but famous detective.

The latter proved an amusing companion who, during the long night journey to the Mediterranean, recounted to me many of his interesting experiences. His French was better than his English, so we conversed in the former tongue.

There was no sleeping carriage upon the train, therefore, after my companion had spoken to the conductor, we made ourselves as comfortable as we could in the first-class compartment which had been reserved for us. At half-past three in the morning, with true Spanish forethought, he produced some sandwiches, fresh fruit, and a bottle of excellent wine, upon which we made a hearty meal, after which we dozed in our corners till dawn.

Throughout the day my companion, who was quite as eager as myself to arrest the notorious Despujol, chatted in French as we went slowly down the fertile valley of the Ebro and suddenly out to where on our right lay the broad blue sea. Not until late afternoon did we arrive at Barcelona, and having two hours to wait we went along the Paseo de San Juan to the Francia Station, and having deposited our bags there, strolled along to the Plaza de Cataluña, where, at the gay Maison Dorée, we had coffee and cigarettes, while my companion read the Diario and I watched the picturesque crowd about us. Rivero knew Barcelona well, so after we had finished our cigarettes we took a taxi to the Central Police Office, where we had a chat with the chief of the Detective Department, a short stout little man with a round boyish face and a black moustache. After that we took another taxi along to the toy-fair in the Plaza de la Constitución, it being the Feast of St. George, the patron saint of Catalonia, which accounted for the bustle and gaiety of the city.

Then, after an interesting half-hour, we returned to the station and set out upon our slow eight-hour journey through the rich wine lands of Catalonia, with their quaint mediæval villages and towns, with occasional glimpses of sapphire sea, and passing over many ravines and gullies we at last, long after nightfall, entered a long tunnel at the end of which was the station of Port-Bou, the French frontier.