"The witcher was approaching from the main street, walking between stalls, coming straight towards them.
'Renfri was right,' Civril said. 'Give me the crossbow, Nohorn.' He hunched over and, holding the strap down with his foot, pulled the string back. He placed the bolt carefully in the groove as the witcher continued to approach. Civril raised the crossbow.
'Not one step closer, witcher!'
Geralt stopped about forty paces from the group.
'Where's Renfri?'
The half-blood's pretty face contorted. 'At the tower. She's making the sorcerer an offer he can't refuse. But she knew you would come. She left a message for you.'
'Speak.'
'"I am what I am. Choose. Either me, or a lesser." You're supposed to know what it means.'
The witcher nodded, raised his hand above his right shoulder, and drew his sword. The blade traced a glistening arc above his head. Walking slowly, he made his way towards the group."
"Renfri entered the marketplace.
She approached slowly with a soft, feline step, avoiding the carts and stalls. The crowd in the streets and by the houses, which had been humming like a hornet's nest, grew silent. Geralt
stood motionless, his sword in his lowered hand. Renfri came to within ten paces and stopped, close enough to see that, under her jacket, she wore a short coat of chain-mail, barely covering her hips.
'You've made your choice,' she said slowly. 'Are you sure it's the right one?'
'This won't be another Tridam,' Geralt said with an effort.
'It wouldn't have been. Stregobor laughed in my face. He said I could butcher Blaviken and the neighbouring villages and he wouldn't leave his tower. And he won't let anyone in, not even you. Why are you looking at me like that? Yes, I deceived you. I'll deceive anyone if I have to, why should you be special?'"
"'Is this,' he said, with a broad gesture indicating the motionless bodies strewn across the square, 'how your lesser evil looks? Is this what you believed necessary?'
'Yes,' replied Geralt slowly, with an effort.
'Is your wound serious?'
'No.'
'In that case, get out of here.'
'Yes,' said the witcher. He stood a moment longer, avoiding the alderman's eyes. Then he turned away slowly, very slowly.
'Geralt.'
The witcher looked round.
'Don't come back,' said Caldemeyn. 'Never come back.'"
Pretty sure Geralt realises what he's done. But that's just his choice and, right or wrong (if there even is a truly right choice in the situation), he's sticking with it.