‘I do,’ said Caroline, taking her fingers out of her ears, though really she could hear almost as well with them in.

‘Then,’ said Charlotte, ‘let’s go and see him. Let’s appeal to Cæsar.’

‘But he’s got two addresses,’ said Caroline, ‘and we don’t know which he’s at. I mean, the Mineral woman didn’t.’

‘Try both,’ suggested Rupert.

‘But one’s in London,’ said Caroline. ‘The Mineral woman said: “He’s all right: he’s got the castle and he’s got his mansion in Belgrave Square; I can’t expect him to bother about me and my little house.”’

Charlotte sprang up. ‘Let’s go to the castle, and if he’s not there, we’ll get another take-your-lunch-with-you-cheese-and-cake-will-do day and go to London and see him there.’

The brilliant daring of this idea made the others gasp.

‘Do you mean go now?’ said Caroline.

‘Why not? There’s lots of the day left. It’s not half-past three yet.’