So far as I was concerned, the incident was closed.

I went back to my seat, and picking up the lump of sugar which still lay on the table where I had dropped it, put it carefully in my pocket.

But my appetite for tea was satisfied for the present.

Moreover it was hardly advisable to stay in the shop lest some fresh spy should come to see how I fared.

Accordingly I obtained my check, handed it in at the cashier's desk and took my departure.
All this time, it will be observed, I had been taking it for granted that the lady in black had followed me from Kensington to this shop; that, in fact, she was none other than Mrs.Schallibaum.And, indeed, the circumstances had rendered the conclusion inevitable.