"That's so, sir; King told me yesterday that he'd bury his head in the sand if something didn't turn up soon. You haven't given me the exact address though."

"Because I haven't got it. I only know that the woman lives somewhere near St. Stephen's Church—she sits under, or on, one of the curates there. If you can get her address from her coachman, do so. But go and dress and be in Portman Square at the earliest possible moment."

It was now very near one o'clock, indeed the hour struck as I passed the chapel in Orchard Street; and when I came into the square I found my own coachman waiting with the brougham at the corner by Baker Street. I told him, before I entered the house, to expect Abel; and not by any chance to draw up at Lady Faber's. Then I made my way quietly to the ball-room and observed Mrs. Kavanagh—I will not say dancing, but hurling herself through the last figure of the lancers. It was evident that she did not intend to quit yet awhile; and I left her to get some supper, choosing a seat near to the door of the dining-room, so that any one passing must be seen by me. To my surprise, I had not been in the room ten minutes when she suddenly appeared in the hall, unattended, and her cloak wrapped round her; but she passed without perceiving me; and I, waiting until I heard the hall door close, went out instantly and got my wraps. Many of the guests had left already, but a few carriages and cabs were in the square, and a linkman seemed busy in the distribution of unlimited potations. It occurred to me that if Abel had not got the woman's address, this man might give it to me, and I put the plain question to him.

"That lady who just left," said I, "did she have a carriage or a cab?"

"Oh, you mean Mrs. Kevenner," he answered thickly, "she's a keb, she is, allus takes a hansom, sir; 192, Westbourne Park; I don't want to ask when I see her, sir."

"Thank you," said I, "she has dropped a piece of jewelry in the hall, and I thought I would drive round and return it to her."

He looked surprised, at the notion, perhaps, of any one returning anything found in a London ball-room but I left him with his astonishment and entered my carriage. There I found Abel crouching down under the front seat, and he met me with a piteous plea that the woman had no coachman, and that he had failed to obtain her address.

"Never mind that," said I, as we drove off sharply, "what did they say at the station?"

"They wanted to bring a force of police round, and arrest every one in the house, sir. I had trouble enough to hold them in, I'm sure. But I said that we'd sit down and watch if they made any fuss, and then they gave in. It's agreed now that a dozen men will be at the Harrow Road station at your call till morning. They've a wonderful confidence in you, sir."

"It's a pity they haven't more confidence in themselves—but, anyway, we are in luck. The woman's address is 192, Westbourne Park, and I seem to remember that it is a square."