Peter Stanford's previous investigations into the history, theology, enduring appeal and cultural significance of religious ideas include Martin Luther: Catholic Dissident; Judas: The Troubling History of the Renegade Apostle; The Devil - A Biography; Heaven - A Traveller's Guide to the Undiscovered Country; and The She-Pope, an investigation of the Pope Joan legend.

His other books include biographies of Bronwen Astor, Lord Longford and the Poet Laureate, C Day-Lewis, plus the polemical Catholics and Sex that became an award-winning Channel 4 series in 1992.

He is a senior features writer at the Daily and Sunday Telegraph titles, and contributes to the Independent, the Observer, the Daily Mail and the Catholic weekly, the Tablet, where he is a columnist. He has presented programmes on BBC 1, Channel 4 and Channel 5, as well as BBC Radios 2 and 4 and the BBC World Service.