Traitor King, by Sunday Times bestselling author Andrew Lownie, looks at the years following the abdication of Edward VIII when the former king was kept in exile, feuding with his family over status for his wife, Wallis Simpson, and denied any real job.

Drawing on extensive research into hitherto unused archives and Freedom of Information requests, it makes the case that the Duke and Duchess of Windsor were not the naïve dupes of the Germans but actively intrigued against Britain in both war and peace.