“No. That’s the strangest part of it,” I responded. “Nothing was seen of any cab or conveyance, although, of course, there must have been one.”

“And that inquiry by telephone was a remarkable incident,” Dick went on. “You say that the inquirer was popping about to various call-rooms ringing up his confederates. That shows that there were two or three in the secret. It hardly seems feasible that the man who rang up from the Minories was the same as the one with whom you spoke at Putney.”

“No; but the arrangement to meet in St. James’s Park to-morrow is extraordinary, to say the least.”

“Ah, my dear fellow,” observed my friend, with a smile, “I very much fear that that appointment won’t be kept. Men such as they evidently are will hardly risk a meeting. On reflection, the individual, whoever he is, will see that he has given himself away, and his natural caution will prevent him from going near St. James’s Park.”

“Well, I only hope he does meet me,” I observed.

“So do I. But to my mind such a circumstance is entirely out of the question. You see he went to call-boxes in order to avoid detection.”

“The curious thing is, that if it were the same man who rang up each time he must have travelled from one place to another in an amazingly rapid manner.”

“There might be two persons,” he suggested.

“Of course there might,” I answered. “But I think not. The girl at the exchange evidently recognised the voice of the persistent inquirer.”

“I’m glad I came down—very glad,” he said. “I went over to see Lily, but she’s gone to Ipswich with her aunt, an old lady who feared to travel alone. It appears she wrote to me this morning, but the letter has missed the post, I suppose. It will come to-morrow morning.”