Paperback: Plutocrats by Chrystia Freeland (Penguin, £9.99)

We spend a lot of time talking about “the rich”. But who are they and how rich? Freeland, a financial writer, has made a gripping analysis. In brief, the rich are getting richer. But, importantly, the very rich are getting very much richer — and the very, very rich are getting very, very much richer. We’ve all heard about the conflict between the one per cent and the 99 per cent. But there’s also an interesting, and relevant, conflict within the one per cent. People who work in Wall Street, she says, “have become suspicious of their bosses”. The global elite might end up turning the ordinary rich into radicals.