'Where did all this happen?'

'At the office. Where else do I ever see Mitchell?'

'Then does Miss Wrenner come to the office?'

Bruce stared at her in silent pity.

'Miss Wrenner! At the office! Why you must be wool-gathering! Women are not allowed at the F O. Surely you know that, dear?'

'Well, then, where did you meet Miss Wrenner?'

'Miss Wrenner? Why do you ask?'

'Simply because I want to know.'

'Oh! Good heavens! What does it matter where I met Miss Wrenner?'

'You're right, Bruce; it doesn't really matter a bit. I suppose you've forgotten.'