‘I take escaping soldiers across the mountains. That’s why the gendarmes brought you to me.’

Lloyd was heartened. He had been planning to do it alone, and he had been worried about finding the way. Now perhaps he would have a guide.

‘I have two others waiting,’ she said. ‘A British gunner and a Canadian pilot. They are in a farmhouse in the hills.’

‘When are you planning to go across?’

‘Tonight,’ she said. ‘Don’t drink too much wine.’

She went away again and returned half an hour later carrying an old, ripped brown overcoat for him. ‘It’s cold where we’re going,’ she explained.

They slipped out of the kitchen door and threaded their way through the small town by starlight. Leaving the houses behind, they followed a dirt track steadily uphill. After an hour they came to a small group of stone buildings. Teresa whistled then opened the door to a barn, and two men came out.

‘We always use false names,’ she said in English. ‘I am Maria and these two are Fred and Tom. Our new friend is Leandro.’ The men shook hands. She went on: ‘No talking, no smoking, and anyone who falls behind will be left. Are we ready?’

From here the path was steeper. Lloyd found himself slipping on stones. Now and again he clutched at stunted bushes of heather beside the path and pulled himself upwards with their aid. The petite Teresa set a pace that soon had the three men puffing and blowing. She was carrying a flashlight, but she refused to use it while the stars were bright, saying she had to conserve the battery.

The air got colder. They waded across an icy stream, and Lloyd’s feet did not get warm again afterwards.

An hour later, Teresa said: ‘Take care to stay in the middle of the path here.’ Lloyd looked down and realized he was on a ridge between steep slopes. When he saw how far he could fall, he felt a little giddy, and quickly looked up and ahead at Teresa’s swiftly moving silhouette. In normal circumstances he would have enjoyed every minute of walking behind a figure like that, but now he was so tired and cold he did not have the energy even to ogle.

The mountains were not uninhabited. At one point a distant dog barked; at another they heard a tinkling of eerie bells, which spooked the men until Teresa explained that mountain shepherds hung bells on their sheep so that they could find their flocks.

Lloyd thought about Daisy. Was she still at Tŷ Gwyn? Or had she gone back to her husband? Lloyd hoped she had not returned to London, for London was being bombed every night, the French newspapers said. Was she alive or dead? Would he ever see her again? If he did, how would she feel about him?

They stopped every two hours to rest, drink water, and take a few mouthfuls from a bottle of wine Teresa was carrying.