They parted. The next weeks were no doubt a severe strain upon Dunning's nerves: the intangible barrier which had seemed to rise about him on the day when he received the paper, gradually developed into a brooding blackness that cut him off from the means of escape to which one might have thought he might resort. No one was at hand who was likely to suggest them to him, and he seemed robbed of all initiative. He waited with inexpressible anxiety as May, June, and early July passed on, for a mandate from Harrington. But all this time Karswell remained immovable at Lufford.
At last, in less than a week before the date he had come to look upon as the end of his earthly activities, came a telegram: 'Leaves Victoria by boat train Thursday night. Do not miss. I come to you to-night. Harrington.'
He arrived accordingly, and they concocted plans. The train left Victoria at nine and its last stop before Dover was Croydon West. Harrington would mark down Karswell at Victoria, and look out for Dunning at Croydon, calling to him if need were by a name agreed upon. Dunning, disguised as far as might be, was to have no label or initials on any hand luggage, and must at all costs have the paper with him.
Dunning's suspense as he waited on the Croydon platform I need not attempt to describe. His sense of danger during the last days had only been sharpened by the fact that the cloud about him had perceptibly been lighter; but relief was an ominous symptom, and, if Karswell eluded him now, hope was gone: and there were so many chances of that. The rumour of the journey might be itself a device. The twenty minutes in which he paced the platform and persecuted every porter with inquiries as to the boat train were as bitter as any he had spent. Still, the train came, and Harrington was at the window. It was important, of course, that there should be no recognition: so Dunning got in at the farther end of the corridor carriage, and only gradually made his way to the compartment where Harrington and Karswell were. He was pleased, on the whole, to see that the train was far from full.
Karswell was on the alert, but gave no sign of recognition. Dunning took the seat not immediately facing him, and attempted, vainly at first, then with increasing command of his faculties, to reckon the possibilities of making the desired transfer. Opposite to Karswell, and next to Dunning, was a heap of Karswell's coats on the seat. It would be of no use to slip the paper into these—he would not be safe, or would not feel so, unless in some way it could be proffered by him and accepted by the other. There was a handbag, open, and with papers in it. Could he manage to conceal this (so that perhaps Karswell might leave the carriage without it), and then find and give it to him? This was the plan that suggested itself. If he could only have counselled with Harrington! but that could not be. The minutes went on. More than once Karswell rose and went out into the corridor. The second time Dunning was on the point of attempting to make the bag fall off the seat, but he caught Harrington's eye, and read in it a warning. Karswell, from the corridor, was watching: probably to see if the two men recognized each other. He returned, but was evidently restless: and, when he rose the third time, hope dawned, for something did slip off his seat and fall with hardly a sound to the floor. Karswell went out once more, and passed out of range of the corridor window. Dunning picked up what had fallen, and saw that the key was in his hands in the form of one of Cook's ticket-cases, with tickets in it. These cases have a pocket in the cover, and within very few seconds the paper of which we have heard was in the pocket of this one. To make the operation more secure, Harrington stood in the doorway of the compartment and fiddled with the blind. It was done, and done at the right time, for the train was now slowing down towards Dover.
In a moment more Karswell re-entered the compartment. As he did so, Dunning, managing, he knew not how, to suppress the tremble in his voice, handed him the ticket-case, saying, 'May I give you this, sir? I believe it is yours.' After a brief glance at the ticket inside, Karswell uttered the hoped-for response, 'Yes, it is; much obliged to you, sir,' and he placed it in his breast pocket.
Even in the few moments that remained—moments of tense anxiety, for they knew not to what a premature finding of the paper might lead—both men noticed that the carriage seemed to darken about them and to grow warmer; that Karswell was fidgety and oppressed; that he drew the heap of loose coats near to him and cast it back as if it repelled him; and that he then sat upright and glanced anxiously at both. They, with sickening anxiety, busied themselves in collecting their belongings; but they both thought that Karswell was on the point of speaking when the train stopped at Dover Town. It was natural that in the short space between town and pier they should both go into the corridor.
At the pier they got out, but so empty was the train that they were forced to linger on the platform until Karswell should have passed ahead of them with his porter on the way to the boat, and only then was it safe for them to exchange a pressure of the hand and a word of concentrated congratulation. The effect upon Dunning was to make him almost faint. Harrington made him lean up against the wall, while he himself went forward a few yards within sight of the gangway to the boat, at which Karswell had now arrived. The man at the head of it examined his ticket, and, laden with coats, he passed down into the boat. Suddenly the official called after him, 'You, sir, beg pardon, did the other gentleman show his ticket?' 'What the devil do you mean by the other gentleman?' Karswell's snarling voice called back from the deck. The man bent over and looked at him. 'The devil? Well, I don't know, I'm sure,' Harrington heard him say to himself, and then aloud, 'My mistake, sir; must have been your rugs! ask your pardon.' And then, to a subordinate near him, ''Ad he got a dog with him, or what? Funny thing: I could 'a' swore 'e wasn't alone. Well, whatever it was, they'll 'ave to see to it aboard. She's off now. Another week and we shall be gettin' the 'oliday customers.' In five minutes more there was nothing but the lessening lights of the boat, the long line of the Dover lamps, the night breeze, and the moon.
Long and long the two sat in their room at the 'Lord Warden'. In spite of the removal of their greatest anxiety, they were oppressed with a doubt, not of the lightest. Had they been justified in sending a man to his death, as they believed they had? Ought they not to warn him, at least? 'No,' said Harrington; 'if he is the murderer I think him, we have done no more than is just. Still, if you think it better—but how and where can you warn him?' 'He was booked to Abbeville only,' said Dunning. 'I saw that. If I wired to the hotels there in Joanne's Guide, "Examine your ticket-case, Dunning," I should feel happier. This is the 21st: he will have a day. But I am afraid he has gone into the dark.' So telegrams were left at the hotel office.
It is not clear whether these reached their destination, or whether, if they did, they were understood. All that is known is that, on the afternoon of the 23rd, an English traveller, examining the front of St Wulfram's Church at Abbeville, then under extensive repair, was struck on the head and instantly killed by a stone falling from the scaffold erected round the north-western tower, there being, as was clearly proved, no workman on the scaffold at that moment: and the traveller's papers identified him as Mr Karswell.