'Of course, sir.' And again he wondered how much Keddinton might know of his time in the Navy, for would he have so easily trusted a deserter?
Keddinton paused again, still observing his reactions. Then he nodded, as though what he had seen satisfied him, and said, 'At the time of Kit Hebden's death, we were having a problem with confidential information being leaked regularly to our enemies abroad. The messages we intercepted were being transmitted in a code so difficult that only the most skilled cryptologist could have cracked the thing. Without knowing the key to the cipher, there was little way to even tell how to begin. We put Hebden to work on it, hoping that there would be progress. He had a keen mind and a fascination for such things.'
'Perhaps he was the spy,' Nathan suggested. 'If the problem stopped after my father's death, it could as easily have been because Hebden was gone as well.'
'True, I suppose,' Veryan conceded. 'But Hebden assured us all, when last we saw him at dinner the night before he died, that a solution was forthcoming. If he had been guilty, then why would he have bothered? He could have stalled indefinitely and told us the code was unbreakable. We'd have been none the wiser.'
Nate tried to contain his impatience. 'So there was a code, and Hebden had cracked it. What is that to me?'
'Possibly the key to it all, Nathan. I knew both men. I doubt that Hebden would have made a false boast that night. He did not speak the whole truth about the code because he felt the traitor was in the room with us. Perhaps he wished to give the man warning, expecting him to end his life with honour or flee the country. We were all friends, you know. I doubt he'd have wanted to see a friend hang.'
'Then he was softer than the rest of you,' Nate responded. 'You and Carlow had no problem watching my father die.'
The memory must have been a difficult one. For the implacable Keddinton almost seemed to flinch at it, before regaining composure. 'It was harder than you know, Nathan. But Kit Hebden was like a brother to us as well. What else could we do?'
'You could have believed my father, when he said he was innocent. And while I might believe that it pained you to watch him die, I do not see the brotherly feeling recorded in George Carlow's journal.'
Keddinton made a helpless gesture. 'These are the private rantings of a much younger man. And Carlow had a bit of a hot head, back in the day. He was a man given over to impulse.'
'All the more likely that he was the killer.'
Keddinton shook his head. 'Every man with a hot temper does not turn killer. I see nothing in the journal to persuade me otherwise.'
'Then what would convince you?'
'If you should turn up the code key, it would tell us much. I searched for it that night, expecting it to be on Hebden's person. But there was nothing in his pockets that might be a key. If your father stole it--' Keddinton held up a hand to forestall any argument from Nathan '--he would not have had time to destroy it. Carlow was there within moments of the blow being struck. And I searched the grate. The fire was still unlit and with no fresh ashes at all.' He looked seriously at Nathan. 'Surely your father had secret places, in his study or somewhere else in the house. If he had concealed it upon his person, he might have had time to hide it, before they took him to Newgate. Or maybe he gave something to your mother. Perhaps he slipped it between the pages of a book. I doubt it would be more than a single sheet of paper. Perhaps only a half sheet. Or even less, if the writing was small. Do you remember anything in his effects that might have seemed odd? An unintelligible thing, rows of numbers, or a language you did not understand?'
'It has been so long.' And very little existed from that time before it had all gone bad. 'I remember nothing that was as you described. The contents of the house were sold at auction, just after the hanging. How can you expect me...'
And then he remembered the torn pages of the journal. 'The only paper I bring to you is from Narborough's library. Maybe if we could find the missing pages, there would be some answer in them. Perhaps Carlow had written it there.'
Veryan shook his head again. 'I will make inquiries as to why the book is damaged, but I am sure they will come to naught.'
'But if they do not?'