Hmm. I'm an old expatriot myself. Been here since before the Great War. Although I still did my bit for King and Country.

[Working on biological weapons. Mustard gas was one of his specialties.

He was also very good at collecting information. Whenever anything interesting crossed his path--some bit of compromising information or a juicy rumour--he filed it away for a time when it might come in handy.

And although he'd never met Miss Persson, he was sure this woman was familiar. He would need to check his notebooks this evening.]