Illmann dictated some more notes to the sergeant and then pronounced that he was finished with the preliminary scene-of-crime investigation, and that it was now the photographer’s turn. Pulling our gloves off we moved away from the trunk and found that the station-master had provided coffee. It was hot and strong and I needed it to take away the taste of death that was coating my tongue. Illmann rolled a couple of cigarettes and handed me one. The rich tobacco tasted like barbecued nectar.

‘Where does this leave your crazy Czech?’ he said. ‘The one who thinks he’s a cavalry officer.’

‘It seems that he really was a cavalry officer,’ I said. ‘Got a bit shell-shocked on the Eastern Front and never quite recovered. All the same, he’s no hop and skip, and frankly, unless I get some hard evidence I’m not confident of making anything stick to him. And I’m not about to send anyone up on an Alexanderplatz-style confession. Not that he’s saying anything, mind. He’s been questioned the whole weekend and still maintains his innocence. I’ll see if somebody from the left-luggage office here can identify him as the coat that left the trunk, but if not then I’ll have to let him go.’

‘I imagine that will upset your sensitive inspector,’ chuckled Illmann. ‘The one with the daughter. From what he was saying to me earlier, he was quite sure that it was only a matter of time before you had a case against him.’

‘Almost certainly. He views the Czech’s conviction for statutory rape as the best reason why I should let him take the fellow into a quiet cell and tap dance all over him.’

‘So strenuous, these modern police methods. Wherever do they find the energy?’

‘That’s all they find energy for. This is well past Deubel’s bedtime, as he’s already reminded me. Some of these bulls think they’re working banking hours.’ I waved him over. ‘Have you ever noticed how most of Berlin’s crimes seem to happen during the day?’

‘Surely you’re forgetting the early-morning knock-up from your friendly neighbourhood Gestapo man.’

‘You never get anyone more senior than a Kriminalassistent doing the A1 Red Tabs. And only then if it’s someone important.’

I turned to face Deubel, who was doing his best to act dog-tired and ready for a hospital bed.

‘When the photographer has finished his portrait, tell him I want a couple of shots of the trunk with the lid closed. What’s more I want the prints ready by the time the left-luggage staff turns up. It’ll be something to help refresh their memories. The professor here will be taking the trunk back to the Alex as soon as the snaps are done.’

‘What about the girl’s family, sir? It is Irma Hanke, isn’t it?’