From the window of Interrogation Room Two, Lindsay watched the black Humber Snipe cruise slowly down the drive and come to a halt at the security gate. A sergeant stepped smartly up to the car, peered at the passengers, then turned and waved to his men. The gate opened and the car crept across the forecourt, where the union flag was picked out in pink and white stones.
‘Mohr’s back.’
There was the screech of a chair being pushed hurriedly away and a moment later he sensed Samuels at his shoulder.
‘A nice suit. Do you think the Division found him that?’
Escort in tow, Mohr was led from the car and into the porch.
‘I’ve got you what you want.’
Lindsay turned to look at him: ‘Charlie?’
Samuels walked back to the table and picked up his bible: ‘Poor Brand, quite a civilised German.’ He flicked through his notes until he found the correct page then began to read:
Funkobergefreiter Heinz Brand. Born Hamburg 1922. Joined Kriegsmarine 1938. Trained wireless school Gluckstadt, wireless intelligence Flensburg…
‘Yes, yes,’ Lindsay snapped, ‘but what about the U-112?’
‘All right, you were right,’ sighed Samuels as if it were painful to admit. ‘It was his first war patrol in a U-boat.’
Brand had served as a wireless operator on board an Atlantic raider called the Pinguin that preyed on British and Empire ships sailing outside the protection of a convoy. In January, he had transferred to the U-boat arm and a month later sailed out of Lorient on the 112: ‘And he confirmed that the other wireless operator, Henning, was a new boy too. That’s the good news. The bad news — he wouldn’t tell me why they joined the 112.’
‘Well done, Charlie, well done.’
Samuels looked at Lindsay as if he had taken leave of his senses: ‘Where does this take us?’
Lindsay turned back to the window. A green bus was parked on the forecourt now and a motley collection of U-boat prisoners was emptying out of it. The guards were encouraging them none too gently down steps into the basement of the building, where they would be issued with soap and fresh clothes.
‘This was the first war patrol south to African waters,’ he muttered. His mind was racing with new questions and possibilities. Donitz chose a senior Staff officer. August Heine had described him as ‘one of the six’. Capable, experienced, Mohr was just the sort of commander you would want if you were going to try something new.
‘The first south,’ he said again for Samuels’ benefit.
‘But there were three other U-boats, and it doesn’t explain why the wireless operators would need to speak English.’
‘And Mohr speaks perfect English.’
Reaching into his jacket, Lindsay took out his cigarettes, tapped one gently on the top of his silver case and lit it. The tobacco hissed as he filled his lungs with the bitter smoke. He stood there, head bent a little, cigarette poised close to his lips, face wrinkled with concentration.
‘Look, Douglas, let’s…’
‘No, Charlie, please, just…’
He raised a hand to silence him. The seconds slipped by. The answer was dancing like a shadow through his mind, tantalisingly close. It was something quite obvious. He closed his eyes — English, English, the wireless operators speak English — a constant beat in the darkness. And then it came to him: ‘How bloody stupid of us. How stupid.’
‘Well?’ Samuels asked impatiently.
‘Isn’t it obvious? The wireless operators were reading our signals. Why else would they need to speak English?’
‘Steady,’ and as if to make his point Samuels reached out and placed his hand on Lindsay’s arm. ‘We don’t know if the wireless operators speak English well enough for that and even if they do, all our signals are in code. They would need to…’ He stopped suddenly to scrutinise Lindsay’s face, ‘… ah, I see. I see. Douglas, you’re racing ahead of yourself.’
‘No, Charlie, listen. There are other things…’ Lindsay hesitated. It was neither the time nor the place to talk of his visit to Winn at the Citadel.
‘This is not for us,’ said Samuels with a profound shake of the head. ‘If you think our codes have been broken you’d better take it up with Checkland.’
‘He’s an idiot.’
‘I’m sure he speaks well of you too,’ said Samuels quietly. ‘Actually I agree with you but an interrogation room at Trent Park isn’t the place to say so.’
Samuels picked up his bible and walked towards the door: ‘Are you driving into Town?’
‘Yes.’
‘You can give me a lift. We’ll talk in the car.’
He led Lindsay into the corridor and through the house to the main staircase. At the bottom, they turned into the entrance hall and walked towards the security desk. Behind it, the duty sergeant was on the telephone. Lindsay nodded and was halfway through the door when the sergeant put the receiver down with a bang.
‘A message, sir.’ He was addressing Samuels. ‘Colonel Checkland’s office on the telephone. The colonel would like to see you at once.’
Samuels groaned loudly and dropped his chin on to his chest: ‘Perfect timing.’
Lindsay looked at him intently for a moment, then reached forward to touch his arm: ‘A word.’
He led Samuels through the porch and across the forecourt to the perimeter fence. ‘Look, don’t mention codes to the Colonel.’
‘What?’ asked Samuels. He looked as if he could not quite believe what he had heard.
‘Please. We need more time. You said yourself that there were too many unanswered questions.’
Samuels took out his handkerchief and held it to his mouth and nose. It was his little anxious ritual. Lindsay had observed him do the same in interrogations. A few seconds later he slipped the handkerchief back in his pocket with a weary sigh: ‘I won’t lie to him, Douglas.’
Lindsay clapped him on the arm: ‘Just be economical with the truth, Charlie. We’re on to something.’