As I sat there by the cheerful fire I heard the voices again raised in the adjoining room—the voices of a man and a woman.

Suddenly a sweet perfume greeted my nostrils. At first it seemed like that of an old-fashioned pot-pourri of lavender, verbena and basalt, such as our grandmothers decocted in their punch-bowls from dried rose-leaves to give their rooms a sweet odour. The scent reminded me of my mother’s drawing-room of long ago.

Gradually it became more and more pungent. It seemed as though some pastille were burning somewhere, for soon it became almost sickening, an odour utterly overbearing.

At the same time I felt a curious sensation creeping over me. Why I could not tell.

I was both agitated and annoyed. I had only half finished my drink, and it was certainly not alcohol that was affecting me. Rather it seemed to be that curious old-world perfume which each moment grew more pungent.

I struggled against it. What would my newly-found friend think if he returned to find me overcome?

I gained my feet with difficulty and managed to walk across the carpet, holding my breath.

Certainly my night’s adventure was, to say the least, a curious one.

Yet in our post-war days in London the man who ventures about town after dark can easily meet with as strange occurrences and narrow escapes as ever were described by the pioneers of Central Africa. The explorer Stanley himself declared that the African jungle was safer than the crossing of the Strand.

I suppose I must have remained in the chair into which I again sank for a further ten minutes. My head swam. My mental balance seemed to have become strangely upset by that highly pungent odour of lavender and verbena. I could even taste it upon my tongue, and somehow it seemed to paralyse all my senses save two, those of sight and reason.