It was by a fortunate accident that Ellery had been able so soon to establish his _alibi_. After drawing blank at the Chelsea Arts Club, he had had very little of an idea where he should try next. He was almost certain that it was there he had been introduced to the man, and the only course seemed to be that of waiting until he turned up again, or his name somehow came back to mind. Still, it was just possible that Ellery had met the man at his other Club in the Adelphi, and he got on a bus and went there to pursue his inquiries. His success was no better, although he remained there to lunch and made persistent inquiries of his fellow-members for an actor whose name began with an F. The afternoon found him walking rather disconsolately down the Strand not at all certain where to go next. Just outside the Golden Cross Hotel, fortune did him a good turn; for he ran straight into the very man he was looking for. Ellery turned back with him, and explained the difficulty he was in, and his acquaintance promised to go at once to Scotland Yard, and try to set matters right with Inspector Gibbs. He was so friendly that Ellery had some difficulty in admitting that he had forgotten his name; but he got round it by asking for his address, in case of need. The other’s answer was to hand him a card, on which was written:— William Gloucester, 11 Denzil Street, S. W. 3. “Of course,” said Ellery to himself. “But it didn’t begin with an F after all.” This meeting put Ellery at his ease; and he felt that he could now go and see Joan with a clear conscience. Leaving Gloucester to go to Scotland Yard, and asking him to tell the inspector that he would come round later, he set off for Liskeard House, and found himself charged with the task of clearing, not himself, but Walter Brooklyn. He also found himself engaged to be married. These events made it all the more essential to make quite sure that the police were no longer inclined to look on him with suspicion; and, on leaving Joan, he went straight to Scotland Yard, and was soon received, not by Inspector Gibbs, but by Superintendent Wilson, who, having received the inspector’s report on Gloucester’s visit, had made up his mind to have a look at Ellery himself. The superintendent at once put him at his ease by telling him that his explanation, and his friend’s corroboration of it, appeared to be quite satisfactory. Ellery’s reply was to say that, in that case, perhaps he might be relieved of the presence of the heavy-footed individual who had been following him about all day. The superintendent laughed. “Yes, I think we can find something more useful for him to do,” he said. “I hope you have not resented our—shall I say?—attentions. We were bound to keep an eye on you until we were certain.” And the superintendent at once gave instructions on the house-phone that the man who had been watching Ellery need do so no longer, but should report to him in a few minutes in his room.