The Dreyfus Affair, the furore caused by a miscarriage of justice in France in 1894, is a source of perennial interest. It raises questions of national identity, political morality and personal integrity that are still relevant today with immigration, Euroscepticism and dodgy dossiers. It is also, as Emile Zola recognised, a gripping story: ‘What a poignant drama, and what superb characters.’