It was fully dark when we turned off the road and onto a forested drive. The trees were tall and shapeless, muffling the sounds around us. Maud drew closer to me, and I squeezed her, thinking suddenly of the leopards I’d talked about on the first train journey. I thought I heard a soft snap, as if twigs were breaking under a heavy foot, and a low growl, and I was about to ask Ramsay if we could go faster but then the trees were thinning and we suddenly saw the lake spread out before us, glittering in the moonlight. Down by the water was a house, with a large garden sloping downwards to end in a jetty. Ramsay pulled to a stop ten feet from the veranda and we climbed out.

‘Here we are,’ he said. ‘Kiboko House.’

‘What does that mean?’ Maud asked.

‘Hippo House.’

‘It’s rather dark,’ my mother said.

‘I’ll find the lanterns,’ Ramsay said.

While the adults huddled on the porch trying to work the lanterns, I picked my way down to the end of the jetty. Fireflies skimmed the water, lighting up the papyrus that grew thickly beneath the wooden planks, and blue water-lilies on the surface. A rowing boat was tied to one of the posts and bumped against it in a small wave when a dark shape rose out of the water a few yards from me, then quickly submerged again. I backed slowly away.

‘Theo?’ My mother’s voice floated down to me. ‘Where are you?’

I turned to face the house. They’d lit the lanterns now and hung them on the porch. Beyond, everything was in darkest shadow, but the house itself was bathed in a flickering orange glow. It was a yellow-stone bungalow with tiled roof, like the houses I’d seen in Nairobi on Market Day. Remembering them led me to thoughts of Sylvie, and I wondered how far we were from her and Freddie at that moment.

I walked back up to join the others as they rattled the key in the lock. Behind us, there was a splashing sound, and a chorus of frogs and ducks set up a complaint. Ramsay was chattering away about the area, pointing into the darkness.

‘The cleft over there, that’s known as Hell’s Gate,’ he said. ‘Red cliffs. And you’ll see Mount Longonot as soon as there’s any light. It’s a dormant volcano, over nine thousand feet high.’

‘Charming,’ my mother murmured.

Maud was leaning against one of the pillars on the porch with her eyes closed. Her face was white.

‘Tired, Spanish?’

‘Yes,’ she said.

‘We’ll be in soon,’ I said.