I bought each bottle at a separate shop in a different disguise (making twenty-four in all), that my proceedings might not attract attention.

I laid down the deadly fluid with all proper caution in the cellar.

At parting from William I gave him five shillings and the cellar key, telling him to be very careful, and await my instructions.

I knew well that long before my ‘instructions’ could reach him, the faithful William would be speechless, and far beyond the reach of human science.

His secret would sleep with the White Groom.

Then Philippa and I drove to town, Philippa asking me conundrums, like Nebuchadnezzar.

‘There was something I dreamed of. Tell me what it was?’ she asked.

But, though better informed than the Wise Men and Soothsayers of old, I did not gratify her unusual desire.

On reaching town I drove straight to the hotel at which my mother was staying.

It was one of those highly-priced private hotels in the New Out.