‘One spring I left my noviciate and came back to the farm. The next party of soldiers which passed, my brother and I joined. We sailed from Dover, landing at Honfleur, joining one of the many bands plundering across France.’ Athelstan stared up at the sky. ‘We were under the command of the Black Prince with his general Walter de Manny and others. Our dreams soon died. No chivalrous knights, no majestic armies moving according to rules, but horrible deeds, towns gutted and burnt, women and children slain. Then one day my brother and I, serving as archers, were caught outside a town by a group of French horsemen. We took up our positions, driving stakes into the ground in the usual pattern. The French charged sooner than we thought. They were amongst us, hacking and killing.’

Athelstan stopped to compose himself before continuing: When it was over, my brother was dead and I had aged a hundred years. I might as well tell you, Cranston. I returned home. I’ll never forget my father’s face. I’d never seen him like that. He just stared at me. My mother? All she could do was crouch in a corner and sob. I think she cried till the day she died. My father soon followed her to the grave. I went back to my Order. Oh, they accepted me but life was harsh. I had to do private and public penance, take a solemn vow that, after I was ordained, I would accept whatever duties my superiors gave me.’

Athelstan snorted with laughter and leaned forward, his arms crossed, as if he was talking to himself and had forgotten the coroner sitting beside him. ‘Whatever duties! Hard study and the most menial work the house could provide; cleaning sewers, digging ditches and, after ordination, I must go here, I must go there! Eventually I protested so Father Prior took me for a walk in the meadows and said I was to prove my worth with one final task.’

He leaned back against the wall. ‘My final task was St Erconwald’s in Southwark.’ Athelstan stared across at Cranston. ‘My father prior chose well. My parents accused me of the murder of my brother. Every day in Southwark someone dies. Men and women drenched with drink, quarrelling and violently fighting each other. In some alleyway or runnel a man hacked to death for stealing ale. A woman slashed from jaw to groin found floating in a ditch. And then you, Sir John! Just in case I should forget, or withdraw, or hide behind my church walls, you are here, ready to lead me along the streets, remind me that there is no escape from murder, from witnessing the greatest sin of all - a man slaying his brother!’

Cranston drained his cup of wine and said, ‘Perhaps your father prior is wiser than you think.’

‘What do you mean?’