Dyrick bowed in return and spoke with unexpected civility. ‘And you, Master Shardlake.’ I moved to pass them, but Isabel, standing rigidly in front of me, fixed me with her steely gaze.

‘Master Shardlake, have you been visiting Master Coleswyn to discuss my complaint, or perhaps to conspire with him against another honest believer who cleaves to the miracle of the Mass?’ Her voice was loud and shrill, reminding me of the night she had confronted me outside Coleswyn’s house.

To my surprise Dyrick took her by the arm. ‘Come, mistress,’ he said quietly. ‘Let me accompany you to the gate.’

She shook off his arm, still fixing me with that steely look, and pointed a skinny finger at me. ‘Remember, Master Shardlake, I know all about the conspiracy: you, and my brother, and that Coleswyn. You will all pay the highest price. Just wait.’ She bared her teeth – good teeth for a woman of her age – in a smile of undiluted malice. ‘Master Dyrick would spare you, but I will not,’ she ended triumphantly, nodding at Dyrick, who looked uncomfortable.

With that, she turned, allowing Dyrick to lead her round the corner. I stared after them. Isabel’s behaviour had been absurd, almost unbalanced. But Dyrick had seemed worried, and I could not help but wonder anxiously what she had meant.

I SPENT AN HOUR making a copy of the map in the chambers of my opponent on the case. I found it hard to concentrate, though, for the bizarre encounter with Isabel still preyed on my mind. I decided to see if Coleswyn was in his chambers.

His clerk said he was, and once more I entered his neat, tidy office. He held out a welcoming hand. He was more at ease than I had ever seen him, relaxed and welcoming. ‘Matthew, how go things with you?’

‘A busy summer. And you, Philip?’

‘My wife and I feel happier now the heresy hunt is over.’ He shook his head sadly. ‘I took some books in yesterday, under the amnesty, good books written by men of true faith, but now forbidden. I have delayed doing it, for I was much attached to them, but the amnesty expires on Monday.’

‘I had some, too. I burned them, as I preferred not to have my name appear on a list.’

‘The amnesty is public, and many people have brought in books. Perhaps even some from Whitehall.’ He laughed uneasily. ‘If they prosecuted those who took advantage of the amnesty, that would be a great breach of faith, and illegal.’ He smiled sadly, looking out of the window at the quadrangle. ‘My books are a big loss to me, but our vicar says we must wait, for better times may be coming.’