Cynthia said quietly: ‘Henry?’

‘Yes?’

‘What chance have we?’

‘Very good, provided we keep our heads.’

‘You shouldn’t lie to me.’

He lifted his head to look at her; the light from his lamp dazzled her eyes. But even without that, it would not have been possible to see the expression on his face, which was in the shadow, lit only by the occasional stray beam from the torch on the other side of the cave.

Henry said slowly: ‘No, we shouldn’t lie to each other.’