'A beautiful morning, would you not agree?' he asked, sweeping a hand towards the lake and the puffy clouds.

'It usually is,' I replied.

'For a terrestrial view it is almost passable,' added Nemo quickly. 'It is nothing but a passing fancy to the beauty of the deep, but in retirement we all have to make sacrifices.'

'I have read your book many times,' I said as courteously as I could, 'and have found much pleasure in its narrative.'

'Jules Verne was not simply my author but also a good friend,' said Nemo sadly. 'I was sorrowful on his passing, an emotion I do not share with many others of my kind.'

We had arrived at Nemo's home. No longer the sleek and dangerous craft from 20,000 Leagues under the Sea, the riveted iron submarine was a shabby wreck streaked with rust, a thick green line of algae growing on the glass of the two large viewing windows. She belonged to a redolent age of high-technological expectation. She was the Nautilus.

We made our way up the gangplank and Nemo helped me aboard.

'Thank you,' I said, walking down the outer casing to the small conning tower where he had set up a chair and table upon which stood a glass hookah. He pulled up another folding chair and bade me sit down.

'You are here, like me,' he asked, 'resting – between engagements?'

'Maternity leave – of a sort,' I explained.

'Of these matters I know nothing,' he said gravely, pouring out a cup of coffee; the porcelain was White Star Line.

I took a sip and accepted the proffered biscuit. The coffee was excellent.

'Good, is it not?' he asked, a smile upon his lips.

'Indeed!' I replied. 'Better than I have ever tasted. What is it?'

'From the Guiana Basin,' he explained, 'an area of sea scattered with subterranean mountains and hills every bit as beautiful as the Andes. In a deep valley in this region I discovered an aquatic plant whose seeds, when dried and ground, make a coffee to match any that land can offer.'

His face fell for a moment and he looked into his cup, swirling the brown liquid around.

'As soon as this coffee is drunk, that will be the end of it. I have been moved around the Well of Lost Plots for almost a century now. I was to be in a sequel, you know – Jules Verne had written half of it when he died. The manuscript, alas, was thrown out after his death, and destroyed. I appealed to the Council of Genres against the enforced demolition order, and I – and the Nautilus, of course – was reprieved.'

He sighed.