He lay on the cushions in the back of the van with his eyes shut, but it was too cold to sleep. He spent much of the night thinking about his family. His father had been bad-tempered for more than a year. Father no longer owned the television factory in West Berlin: he had made it over to Rebecca, so that the East German government could not find a way to take it from the family. He was still trying to run the place, even though he could not go there. He had hired a Danish accountant to be his liaison. As a foreigner, Enok Andersen was able to cross between West and East Berlin once a week for a meeting with Father. It was no way to run a business, and it drove Father crazy.

Walli did not think his mother was happy either. She was mostly absorbed in her work, as head of nursing at a large hospital. She hated the Communists as much as the Nazis, but there was nothing she could do about it.

Grandmother Maud was as stoical as ever. Germany had been fighting Russia for as long as she could remember, she said, and she only hoped to live long enough to see who won. She thought that playing the guitar was an achievement, unlike Walli’s parents, who saw it as a waste of time.

The one Walli would miss most was Lili. She was fourteen now, and he liked her a lot better than he had when they were kids and she was a pest.

He tried not to think too much about the dangers ahead of him. He did not want to lose his nerve. In the small hours, when he felt his determination weakening, he thought of Joe’s words: “If you ever sing that song again, you’re fired.” The recollection stoked Walli’s rage. If he stayed in East Germany he would spend his life being told what to play by numbskulls such as Joe. It would be no life at all; it would be hell; it would be impossible. He had to leave, whatever else happened. The alternative was unthinkable.

That thought gave him courage.

At six o’clock he left the van and went in search of a hot drink and something to eat. However, there was nothing open, even at the railway stations, and he returned to the van hungrier than ever. The walking had warmed him, though.

Daylight took the chill off. He sat in the driving seat, so that he could look out for Karolin. She would find him without difficulty: she knew the vehicle, and anyway there were no other vans parked near the school.

Over and over again he visualized what he was about to do. He would take the guards by surprise. It would be several seconds before they realized what was happening. Then, presumably, they would shoot.

With any luck, by that time the guards would be behind Walli and Karolin, shooting at the back of the van. How dangerous was that? Walli really had no idea. He had never been shot at. He had never seen anyone fire a gun, for any reason. He did not know whether bullets could pass through cars or not. He recalled his father saying that hitting someone with a firearm was not as easy as it seemed in the movies. That was the extent of Walli’s knowledge.