The Ministry of Supply offices closed on Christmas Eve and opened again on 27 December. She chose not to go to the ministry's staff Christmas party. On Christmas Day she slipped out of the hotel early and bought some turkey roll, a loaf of bread, butter and two bottles of beer. She sat on her bed, eating her sandwich, drinking her beer and listening to music on the radio and managed not to cry for an hour or so. Then she allowed herself to weep for ten minutes, thinking she had never been so alone in her life, disturbed by the thought that not one person in the entire world knew where she was. She found herself thinking of her father, an old sick man, living in Bordeaux, and she remembered his encouragement and his zeal when Romer came to recruit her. Who would have thought it would end like this? she said to herself, alone in a hotel room in Ottowa… But no, she thought: no self-pity, she angrily reminded herself, wiping her eyes and steeling herself anew. She cursed Lucas Romer for his cruelty and his betrayal. Then she slept for an hour or so and woke more determined, more composed and calculating, stronger. Now she had an ambition, a purpose: to defeat the worst intentions of Lucas Romer became her mission and she began to wonder, in her solitude, if he had been manipulating her from the very beginning of her recruitment; if he had been observing and honing her habits, her cast of mind and her particular diligence – trying her out in Prenslo and in Washington, waiting for the day when she would become suddenly very useful indeed… It was futile stuff, she knew, and to think like that would drive her to madness. The simple fact that he could not find her was her hold over him – her little portion of power. While Eva Delectorskaya was at large in the world, Lucas Romer could never truly relax.

And then she wondered if this was what her life would always be like, from now on: covert, fearful, always watchful, always restless, always watching, suspecting. It was something she didn't particularly want to contemplate or consider. Forget that, she ordered herself: one step at a time. Get home, first, then see what happens.

She went back to work on the 27th only to be faced with another holiday looming at the New Year. But having survived Christmas she felt she could cope with welcoming in 1942. German forces were retreating from Moscow but the Japanese had taken Hong Kong: this was the way it would go, she thought, for a long time to come. She bought a pint of whisky and woke to discover that she had managed to construct a presentable hangover for herself on the morning of I January. The year began with a persistent day-long headache – but there was another headache approaching that she knew could not be avoided.

On her second day back at work, just before the office closed for the evening, she asked if she could see Mr Comeau. He was free and she knocked on his door and was admitted. Comeau was visibly pleased to see her – he had been keeping his distance since she had turned down his holiday invitation, but now he was up and around from his side of the desk, drawing out a chair for her and sitting himself rakishly on the edge of his desk, a leg dangling, an unfortunate inch of hirsute shin exposed below his trouser cuff. He offered her a cigarette and the small ceremony of lighting took place, Eva being careful not to touch his hand as he held his lighter tremblingly in place.

'Second thoughts, Miss Atterdine?' he asked. 'Or is that too much to hope for?'

'I have to ask you an enormous favour,' she said.

'Oh, I see.' The dying fall of the words expressed his huge disappointment eloquently. 'What can I do for you? A reference? A letter of introduction?'

'I need to borrow a hundred dollars,' she said. Unforeseen expenses, she explained; she couldn't wait until her salary started in England.

'Go to your bank,' he said, a little stiffly, offended. 'I'm sure they'll listen to you.'

'I don't have a bank account,' she said. 'I'll pay you back from England. It's just that I need the money now, here, before I go.'

'Are you in some kind of trouble, as they say?' His cynicism didn't suit him, and she could see he knew it.

'No. I just need the money. Urgently.'

'It's a considerable sum. Don't you think I'm entitled to an explanation?'

'I can't explain.'

His eyes fixed on her and she knew he was telling her that there was an easier way – stay in Ottawa, get to know me, we're both lonely. But she gave him no comforting answer in her gaze.

'I'll think it over,' he said, and stood up, buttoning his jacket, the state functionary once more faced with a recalcitrant subordinate.

The next morning there was an envelope on her desk with five twenty-dollar bills inside. She felt a strange rush of emotion: gratitude, relief, shame, comfort, humbleness. Never trust anyone, never trust a soul on this earth – except, she thought, the Witoldskis and the Comeaus of this world.

She moved hotel, again, twice before 18 January, collected her ticket and documentation from the travel bureau in the ministry – ticket and documents made out in the name of 'Mary Atterdine' – and she allowed herself to think of the future for the first time, really, of what she would do when she made landfall, where she would go, what she would do, who she would become. England – London – was hardly her home, but where else could she go? 'Lily Fitzroy' awaited her in Battersea. She could hardly travel to France to try and find her father and stepmother, whatever had become of them. The war would have to end first and it showed no sign of doing that. No, London and Lily Fitzroy were her only options, for the short term at least.

HUGUES ASKED ME IF I wanted another drink – I knew I shouldn't accept (I had drunk too much already) but, of course, I said yes and went eagerly with him to the puddled, ashy bar of the Captain Bligh.

'Can I have a packet of peanuts, as well, please?' I cheerily asked the surly barman. I had arrived late and had missed the food provided in the upstairs room – the sliced baguettes and cheese, sausage-rolls, Scotch eggs and mini pork pies – all good drink-soaking carbohydrate. There were no peanuts, it transpired, though they had crisps; but only salt 'n' vinegar. Salt 'n' vinegar it would have to be, I told him, and in fact I found myself craving that saline bitterness, all of a sudden. This was my fifth vodka and tonic and I knew I would not be driving home.

Hugues handed me my drink and then my bag of crisps, held daintily between thumb and forefinger. 'Sante,' he said.

'Cheers.'

Berangere sidled up beside him and slipped her arm through his, proprietorially, I thought. She smiled hello at me. I had a mouthful of crisps so couldn't speak: she looked too exotic for the Captain Bligh and the Cowley Road, did Berangere, and I could sense her keen urge to leave.

'On s'en va?' she said plaintively to Hugues. Hugues turned and they talked in low voices for a moment. I finished my crisps – it had taken me about three seconds to consume the packet, it seemed, and moved off. Hamid had been right, they clearly were an item, Hugues and Berangere – P'TIT PRIX meets Fourrures de Monte Carle – and right under my roof.

I leant on the bar, sipped my drink, and looked around the smoky pub. I felt good; I was at that level of inebriation – that hinge, that crux, that ridge – where you can decide to proceed or step back. Red warning lights were flashing on the control panel but the aeroplane was not yet in a screaming death-dive. I checked out the crowd in the pub: virtually everyone had moved down here from the function room above once the food and the free drink (bottled beer and screw-top wine) had run out. All of Hamid's four tutors were here and the students he shared them with – and also the small band of Dusendorf engineers – mainly Iranian and Egyptian this season, as it turned out. There was a raucous, teasing mood in the air – a lot of banter was going on around Hamid about his impending departure to Indonesia that he was taking in good grace, smiling resignedly, almost shyly.