"I suppose I had better admit it at once," Jack said. "Besides, you are bound to know sooner or later. Why not come with me and see Mr. Seymour now?"
Bates replied that he would be only too delighted. They set off together without delay, and presently found themselves at Seymour's residence. The latter was doing something mysterious with a file and a pair of handcuffs, both of which he threw aside as his visitors entered. He extended his hand cordially to Bates.
"I am not in the least surprised to see you, inspector," he said. "In fact, I rather wanted to do so. Now, frankly speaking, are you not a little puzzled to know how to lay Anstruther by the heels?"
"We will come to that presently, sir," Bates said quietly. "I shall be glad in the first place to know what hold Anstruther has on you gentlemen who have so suffered at his hands. Anstruther is a blackmailer, I know. But you are a man of pluck and courage--why can't you fight him in the open? I can quite understand that there are others broken in health and spirit, who dare not have their story told and dragged before the diabolical curiosity of the cheap press. But in your case, why, it seems to me----"
"Yes, yes," Seymour interrupted. "But suppose you have a dear friend in whom you are interested? And that friend had done somebody a great wrong? And supposing that Anstruther knew all this? My friend is poor, but I am not. Let us go farther and grant my friend a daughter--a beautiful girl who is just coming to the front in the world of art. She is passionately attached to her father; any disgrace to him would break her heart. And it is in my power to save this dear child by letting Anstruther believe that both myself and others who have suffered are afraid of him. Surely you have heard of many such cases, Mr. Bates?"
Bates nodded. The field was clearing wonderfully. "You will pardon me," he said. "It was stupid of me not to think of that before. The blackmailer generally strikes through the innocent. But another question. Why did Anstruther publish those Nostalgo posters at all?"
"There, to a certain extent, you have me," Seymour confessed. "You see, it is only recently that we Nostalgos have drifted together in London. We must give Anstruther credit for having discovered this. Mind you, there may be many others who have suffered, and are now hiding in silence. They would be nerveless wrecks for the most part. Anstruther probably wanted to let them know that the terror was not dead. You see, it is like the sign of some secret society, reminding members of the long arm. But who can say what was uppermost in the mind of Anstruther? Suppose that the whole dramatic thing had failed in its purpose? What then? Why, Anstruther would have probably turned the posters to some business purpose--a new soap, a novel kind of pill--why, many business houses would gladly buy the reversion of the Nostalgo posters, and make a good thing out of them. I may be wrong, but that is my view. Besides, how are we to know how many other Nostalgos have not dropped into Anstruther's net through those diabolical posters?"
"It is possible you are right," Bates admitted. "Nothing seems to be impossible in the way of crime. But as to Anstruther?"
"I have a heavy debt to pay to him," Seymour said, with a ring in his voice. "And I am in a position to show you how you can lay him by the heels. I presume my friend Masefield has told you everything. That being so, all you have to do is to open Carrington's private safe, and carefully remove a service of Cellini plate which you will find there. When I say carefully, I mean carefully--the thing is not to be fingered. Take it away to the police station, and place it in your glass case. Then, if you follow my advice, within eight and forty hours I pledge you that you shall have evidence against Anstruther as clear and convincing as if it had come from heaven itself."
A silence followed, so impressive was Seymour's speech. Then Bates, who appeared to be utterly puzzled, promised that the thing should be done. At the same moment, there was the sound of an altercation on the outer landing, and a hoarse voice was heard asking some imperative question. The voice struck familiarly on Jack's ears. He glanced significantly at Bates.