"You see, Allan? Mr Shield was wont to mind his book. Epislulae Ex Ponto, book the second. He knows his Ovid and so shall you."

When we were alone, Bransby wiped fragments of snuff from his nostrils with a large, stained handkerchief. "One must always show them who is master, Shield," he said. "Remember that. Kindness is all very well but it don't answer in the long run. Take young Edgar Allan, for example. The boy has parts, there is no denying it. But his parents indulge him. I shudder to think where such as he would be without due chastisement. Spare the rod, sir, and spoil the child."

So it was that, in the space of a few minutes, I found a respectable position, gained a new roof over my head, and encountered for the first time both Mrs Frant and the boy Allan. Though I marked a slight but unfamiliar twang in his accent, I did not then realise that Allan was American.

Nor did I realise that Mrs Frant and Edgar Allan would lead me, step by step, towards the dark heart of a labyrinth, to a place of terrible secrets and the worst of crimes.

2

Before I venture into the labyrinth, let me deal briefly with this matter of my lunacy.

I had not seen my aunt Reynolds since I was a boy at school, yet I asked them to send for her when they put me in gaol because I had no other person in the world who would acknowledge the ties of kinship.

She spoke up for me before the magistrates. One of them had been a soldier, and was inclined to mercy. Since I had indeed thrown the medal before a score of witnesses, and moreover shouted "You murdering bastard" as I did so, there was little doubt in any mind including my own that I was guilty. The Guards officer was a vengeful man, for although the medal had hardly hurt him, his horse had reared and thrown him before the ladies.