“Doubtless,” he said smoothly. “All the same I thought you should have the message, lest you should wish to follow up the steamer as suggested.”

“I have no choice,” French returned. “It is an order from Headquarters. Perhaps, sir, you would add to your already great kindness by telling me my route. With this confounded difference of language I feel myself all at sea.”

The officer, who had seemed bored as to the movements of the Vanes, became once more the efficient, interested consultant. The obvious route, he said, was via Paris. It was true that you could get across country to pick up the international express at Bordeaux, but Paris was quicker and more comfortable. Fortunately, French had returned in time to catch the midday train to the capital. It left at 12.40, and he could easily reach the station and book in the twenty minutes which remained before that hour.

His time from the receipt of the wire until the Paris express pulled out of Havre station had been so fully occupied that French had not been able seriously to consider the message sent. Now, seated in the corner of a second-class compartment with Carter opposite, he drew the flimsy sheet from his pocket and reread it carefully. He understood the reference to Mackay and Henson. Detective-Sergeant Mackay was one of the best men of the Liverpool detective staff, and he was on a very similar job to French’s own. He was watching the outgoing steamers in the hope of capturing one Charles Henson, who with a couple of others had made a sensational raid on a country bank, and after murdering the manager, had got away with a large haul from the safe. French knew Mackay personally, and he was satisfied that if he had said the Vanes had gone on board and remained there, they had done so.

He wondered how it came that Mackay had not at the time recognised the Vanes as a wanted couple. Probably, he thought, the man had been so much occupied with his own case that he had not read up the particulars in the Bulletin, which, after all, was a magazine intended more for the rank and file than for men on specialised duties. However, the fact remained that Mackay had missed his chance, though his habit of detailed observation had enabled him to some extent to redeem his error.

But if it was true that the Vanes had not left the ship at Liverpool, what became of the statements of the Captain and Purser? It was not likely that these men could be hoodwinked over such a matter. They were experts; moreover, they were dealing with a ship with whose every part they were familiar. To the Vanes, on the other hand, the ship would be strange, and they would be ignorant of its routine. Under these circumstances it was absolutely out of the question that the pair could have hidden themselves on board. No, if they were there, the Captain would have known of it. French could not devise any explanation of the matter. The whole thing seemed a contradiction.

He had, however, to settle his own plans. The kindly French police officer had helped him by ’phoning the local office of the Booth Line and finding out the itinerary of the Enoch. This was Saturday, and on the afternoon of the following day, Sunday, the steamer was expected to reach Leixoes, the port of Oporto. She would remain there that night and the next day, leaving Leixoes about 8 o’clock on the Monday evening. Next day about noon she was due in Lisbon, where she would remain for two days. After that her first call was Madeira.

French had intended to meet her in Lisbon, but it now occurred to him that he might be able to make Oporto in time to join her there. He had bought a railway guide in Havre, and he now proceeded to look up the trains. The route, he saw, was to Bordeaux by the Paris-Orleans line, then on by the Midi to the Spanish frontier at Irun, and so by Medina and Salamanca to Oporto. The first through train from Paris after their arrival at 4.35 p.m. was the 10.22 p.m. from the Gare Quai d’Orsay, and this reached Oporto at shortly after midday on the next day but one, Monday. Oporto to Leixoes was only half an hour’s run, so he had six or seven hours’ margin. Oporto, he decided, was his goal.

They were fortunate in securing sleeping berths between Paris and Bordeaux, and there was a restaurant car on the train to Irun. They waited an hour at the frontier station, and French blessed the intelligence of Manning, who had had their identification papers made available for Spain and Portugal as well as France.

French on his trip from Chamonix to Barcelona had been amazed by the illimitable extent of the earth, but his feelings of wonder on that occasion were as nothing compared to those he now experienced. The journey from Irun to Oporto was absolutely endless; at least he thought so as interminable mile succeeded interminable mile, while day turned into night and night more slowly turned back into day. It was cold, too, through the high tableland of Spain—bitterly cold, and the two men could not get the kind of meals they liked, nor could they sleep well in the somewhat jolting coaches. But all things come to an end, and at half-past one on the Monday, about an hour late, the train came finally to a stand in the Estacao Central of Oporto. There was plenty of time, and the travellers went straight to the Porto Hotel for a short rest before setting out to find the tramway to Leixoes.