He saw clearly that his second explanation, if somewhat more far-fetched, was still quite possibly true. It certainly might be that Vanderkemp had been duped, that he had been sent on this wild goose chase by the murderer, with the object of drawing on himself just that suspicion which he had attracted, and thus allowing the real scent to cool. A good many of the facts tended in that direction, the forged letters, the keeping of the alleged deal from Schoofs, the fact that no Russian nobleman had turned up at either of the rendezvous named, the travelling under a false name, the warning against communications with the office, and last, but not least, Vanderkemp’s manner during the interview, all these undoubtedly supported the view that the traveller had been used to lay a gigantic false clue. If so, it was a fiendish trap to set for the unfortunate dupe. French thought he could see how it was intended to pan out. Vanderkemp, while on these mysterious journeys—certainly when he reached Mr. Duke’s agent in Constantinople—would learn of the murder, and he would at once see how he had been victimised. The more he learned of the details, the more he would realise how completely he was in the toils. He would recognise that if he went home and told his story he would not have a dog’s chance of clearing himself, and he would turn his apparent flight into a real one, and so permanently fasten upon himself a tacit admission of guilt. It was an ingenious scheme, and if it really were the explanation of these mysterious happenings, it gave an indication of the character and mentality of the man who had devised it. French was by no means decided as to the truth of the matter, but on the whole he thought that though he undoubtedly had evidence to justify him in applying for the arrest and extradition of the traveller, he would prefer to avoid this step if possible. If the man tried to give him the slip, the local police would get him in no time. Accordingly he turned once more to Vanderkemp. “Mr. Vanderkemp,” he began, “I am strongly inclined to believe your story. But as a man of the world you will readily see that it must be more completely examined before it can be fully accepted. Now the question is, Are you willing to come back with me to London and give me your assistance towards finding out the truth? I can make you no promise that you will not be arrested on reaching British ground, but I can promise you that you will be fairly dealt with and get every chance and assistance to prove your innocence.” Vanderkemp did not hesitate in his reply. “I will go,” he said promptly. “I am aware that you can have me arrested here, if you want to, by applying to the Spanish authorities, so I have no choice. But I think I should go in any case. I have done nothing contrary to the law, and I have done nothing to be ashamed of. I cannot now rest until my innocence is admitted.” French nodded gravely.