Matthew Sweet asks historian Charles Glass, author of a new book on deserters in World War Two, whether desertion is an act of sanity, and not - as some armed forces have tended to believe - a symptom of mental illness. He also talks to Ben Griffin of the organisation Veterans for Peace, who represents soldiers in current conflicts who seek a way out. Hermione Lee discusses the letters novelist Willa Cather didn't want you to read, and Sandra Hebron and Mary Wild review Pasolini's controversial film Theorem.