London at all hours is a fascinating study to me, and however much I see of her, I never tire of watching her moods.

After I left my hotel I strolled along the Embankment so far as the Houses of Parliament, passed the Abbey, made my way down Victoria Street, and then by way of Grosvenor Place to Hyde Park Corner.

Opposite Apsley House I paused to look about me.

I had my reasons for so doing, for ever since I had left the river-side, I had entertained the notion that I was being followed.

When I had crossed the road at the Houses of Parliament, two men, apparently of the loafer class, had crossed too.