"That's our man," I whispered to Quarles, and without waiting to take leave of Mr. Hayes, I hastened to the door. Squires was going slowly down the street, no evidence of alarm about him, no desire apparently to lose himself in the crowd. He had not got very far when Quarles joined me, keen now there was a trail to follow. "I know the gang he used to be friendly with," I said as we began to follow, "although I've got nothing definite against this youngster. It was this gang, I believe, that worked the series of frauds on jewelers three years ago, although we never brought it home to them. Just the men to deal with a jeweled chalice, eh, professor? I expect young Squires recognized me and guesses I am after it." Our object was to track young Squires to his destination. Since he was connected with St. Ethelburga's through the hooligan club, it was quite likely he had had a direct hand in the robbery, but it was certain others were the prime movers, and I guessed he was on the way to warn them that I was on the trail. At the corner of a street he stopped to speak to a man and a woman, and we were obliged to interest ourselves in a convenient shop door. He stood at the corner talking for at least ten minutes. Quarles thought he was having words with the woman, but it could not have been much of a quarrel for none of the passersby took any particular notice of them. Presently the man and woman crossed the street arm in arm, and Squires sauntered round the corner. We were quickly at the corner, afraid of losing sight of him. He was still in sight, still walking slowly. Once he turned to light a cigarette, and after that he increased his pace a little. "It's evident he lied when he said he was going to look for a job," I remarked. "But it's not so evident that one of us ought not to have followed the man and woman," said Quarles. "They may have gone to do the warning." "I think not," I answered. "If you have noted our direction you will find we have traveled a pretty circuitous route. He'll wait until he thinks he is safe from pursuit, and then take a bee line for his destination." As if he would prove my words Squires mended his pace, swinging down one street and up another as if he had suddenly become definite. At corners he gained on us, I think he must have run the moment he was out of sight, and in one short street we were only just in time to see him disappear round a corner. "I'm going to give this up soon, Wigan," said Quarles as we hurried in pursuit. "I don't care how many jewels the chalice had in it." We were round the corner. Squires had disappeared, but we could hear running feet in the distance. "That settles it," said Quarles, coming to halt a dozen yards from the corner. "Go on if you like, Wigan, but--"