<p>'Staggering and unforgettable storytelling' Mel Giedroyc<br>In his retirement at the Vatican City, emeritus pope Benedict XVI is hard at work on his magnum opus: a high-school comedy screenplay.<br>At a grimy pub in North London, a doctoral researcher is abducted by gangsters peddling William Wordsworth's handwritten account of drug-fuelled sex orgies.<br>In the West African state of Benin, a politician's daughter inherits a large cash sum whi...