Sarah, an overweight but healthy, attractive adolescent, who could not have conformed less to Streicher’s racist stereotype of the Jew, being blue-eyed and fair-haired, gave an impatient toss of her head, like a stubborn little pony.

‘She’s run away, that’s all. She was always talking about it. Not that I care much what’s happened to her. Emmeline Steininger’s no friend of mine. She’s always saying bad things about Jews. I hate her, and I don’t care if her father is dead.’

‘That’s enough of that,’ her father said firmly, probably not caring to hear much about fathers who were dead. ‘It doesn’t matter what she said. If you know something that will help the Kommissar to find her, then you must tell him. Is that clear?’

Sarah pulled a face. ‘Yes, Daddy,’ she yawned, and threw herself down into an armchair.

‘Sarah, really,’ said her mother. She smiled nervously at me. ‘She’s not normally like this, Kommissar. I must apologize.’

‘That’s all right,’ I smiled, sitting down on the footstool in front of Sarah’s chair.

‘On Friday, when one of my men spoke to you, Sarah, you told him you remembered seeing a man hanging around near your school, perhaps a couple of months ago. Is that right?’ She nodded. ‘Then I’d like you to try and tell me everything that you can remember about him.’

She chewed her fingernail for a moment, and inspected it thoughtfully. ‘Well, it was quite a while ago,’ she said.

‘Anything you might recall could help me. For instance, what time of day was it?’ I took out my notebook and laid it on my thigh.

‘It was going-home time. As usual I was going home by myself.’ She turned her nose up at the memory of it. ‘Anyway, there was this car near the school.’

‘What kind of car?’

She shrugged. ‘I don’t know makes of cars, or anything like that. But it was a big, black one, with a driver in the front.’

‘Was he the one who spoke to you?’

‘No, there was another man in the back seat. I thought they were policemen. The one sitting in the back had the window down and he called to me as I came through the gate. I was by myself. Most of the other girls had gone already. He asked me to come over, and when I did he told me that I was–’ She blushed a little and stopped.

‘Go on,’ I said.

‘–that I was very beautiful, and that he was sure my father and mother were very proud to have a daughter like me.’ She glanced awkwardly at her parents. ‘I’m not making it up,’ she said with something approaching amusement. ‘Honestly, that’s what he said.’

‘I believe you, Sarah,’ I said. ‘What else did he say?’