'I found myself laughing till the tears ran down my cheeks.' Auberon Waugh
Edward is throwing a dinner party with Binny, his mistress. Aware that she has long been denied the small intimacies that his wife takes for granted - choosing a birthday present for his sister, for example, or sorting his socks - he wants to give her a chance to feel more involved in his life.
Between a late start, and him having to be away by half past ten, things are a little awkward to begin with; but they soon seem to be going well. When some uninvited guests turn up, however, it looks as though Edward isn't going to make it home on time after all . . .