As he went slowly up to Trafalgar Square after the business of telephoning, his spirits lightened. For the last hour he had been disgusted with himself to an extent that beggared his vocabulary. He had had the man within six yards of him, and had let him slip through his fingers. Now the lighter side of the situation was becoming apparent. He had made a backward slip certainly, but even at the end of the slip he was further on—much further on—than when he had started. He knew for a certainty that the Levantine was in London. That was a tremendous advance. Until his description had been furnished to the police the previous night there had been nothing to prevent the murderer from leaving London at any moment. They would have had to consider reports from all over Britain—and Grant had bitter experience of such reports of wanted men—and perhaps the Continent, if it had not been for that chance meeting in the Strand, and the man’s lack of self-control in a delirious moment. Now they knew he was in London, and could concentrate their forces. He might leave it by road, but he could not by any other method, and Grant had seen to it that he would have difficulty in hiring a car from any recognized garage. That merely made things difficult for him—it did not prevent him from going if he wanted to, but it made his exit considerably slower. It was strange in the circumstances that he had stayed at all when the way was clear. But Grant knew the Londoner’s mulish habit of clinging to the town he knows, and the foreigner’s ratlike preference of the sewers to the open. Both would be more likely to hide than to run. And of course the wanted man, though his description had not been broadcast, had no guarantee that the police were not in possession of it. It would have required more courage or more foolhardihood than most men possess to face a ticket collector or a boat official in these circumstances. So the man had stuck to the town. From now on he would be at the mercy of a continual patrol of the flying squad, and his chances of slipping through their fingers again were very small. Moreover, Grant had seen him. That was another enormous advance. They could never meet again, even in the distance, without Grant recognizing him.
The Levantine in London, the dead man’s friend in London presumably, the Levantine recognizable, the friend about to be traced by his banknotes—things, as Marcel had remarked, were marching. At the bottom of St. Martin’s Lane Grant remembered that this was the last night of Didn’t You Know? He would drop in there for a little and then go back to the Yard. His thoughts worked much better without goading, and the quiet of the room at the Yard was a silent goad that maddened him. His thoughts would never work to order. There was more likelihood of a revelation being vouchsafed him in the middle of the teeming streets, in the seething mob that somewhere held the Levantine, than in the imposing isolation of his room.
The play had been in progress for about twenty minutes when Grant, after a chat with the manager, found six square inches of standing-room at the back of the dress circle. It was a magnificent sight, looked at from the darkness of so remote a vantage. The theatre, never a very accommodating one, was packed from floor to ceiling, its rosy dimness filled with
