“Good afternoon,” he said to the taxi man, an intelligent looking fellow with a clean-shaven face, who returned his greeting civilly as he followed him into the room; “are you the man who drove a lady from the Inanity on Monday night to a house in Carolina Road?”

“That’s me, sir,” answered the man, “leastways, as you may say, I drove one of them there.”

“What?” said Gimblet. “Was there more than one?”

“Yes, sir, there was two young ladies when I took them up, but only one of them went to Carolina Road.”

“What happened to the other?”

“I took her to another address first, sir,” said the driver; “I forget the exact number, but somewhere about half-way down Hilliard Street it was, and on the right hand side as I went. That’s Maida Vale way, Hilliard Street is.”

“And you went there first,” cried the detective, “why then, of course I see it all now; the lady only told me she went from the theatre to Carolina Road, and my not knowing of the detour you made on the way has led me to some wrong conclusions.”

“To Hilliard Street first. Those were the orders they give me,” repeated the man.

“Yes, of course,” said Gimblet. “Now, as you drove on from there to Carolina Road, do you by any chance remember seeing two ladies, very richly dressed, standing in front of the open door of a house, which had a small garden or yard between it and the street?”