"You force me to admit that I do know a little, a very little, more than I have confessed hitherto about the man who visited Mrs.Lester's flat last night.

I have said nothing about the matter thus far because I didn't want to be convicted of a piece of idle curiosity worthy of a gossip-loving housemaid.

I noticed the man I have described staring at the name tablet of the street as my cab turned the corner.

I did not know him.

I had never seen him before last night, but he was of such distinguished appearance and his face was of so rare a type that I was interested and wished to ascertain, if possible, on whom he meant calling if, as it seemed, he was searching for an address in these flats.