Ulf thought that over. 'I'm more confused.'

'The walkers are all British Christians. I think. The man leading them is a Roman, a bishop.'

'So why are they following him, if he's not one of theirs?'

'I-' Wuffa spread his hands. He knew next to nothing about Christians. He only observed their behaviour from outside, as if they were exotic birds. 'They are leaving for good. You see it all the time. Look.' Wuffa pointed. 'See the jewellery? They are wearing their wealth. These are the people who bury your coin hoards. Their church is organising the flight.'

'Where are they going?'

'To the west, perhaps, or over the sea to Gaul.'

'Away from you Saxons.'

Wuffa grinned. 'Away from us, yes.'

'Carrying all that wealth makes them easy to rob.'

They shared another glance. But then they turned away, the thought unfinished. Evidently, Wuffa thought, neither of them was an instinctive thief.

A bonfire burned on the road, and the hymn-singers had to divert to pass it by. An abandoned house was being looted by a pair of Saxons, a rougher sort than the mercenary warriors who accompanied the refugees. The looters evidently weren't having much luck. They hurled old clothes and broken furniture out of the house and onto the fire – and books, rolled-up scrolls of parchment and scraped leather and heaps of wooden leaves that curled and popped as they blackened. Most of the pilgrims passed by this scene with eyes averted.

But one old man, his toga flapping about his skinny frame, broke from the column and tried to get the books off the Saxons. His cries were a broken mixture of British and Latin: 'Oh, you pagan brutes, you illiterate barbarians, must you even destroy our books?' A young woman called him back, but friends held her.

The two looters watched the old man's ranting, bemused. Then they decided to have a little fun. They pushed the old man to the dusty ground, picked him up by his scrawny legs and arms, and stretched him out like a pig on a spit. The filthy toga fell away from the old man's body in loops of cloth, revealing a grubby tunic and a kind of loincloth.