John Wilson is joined by writer Philippa Gregory to discuss her latest work of historical fiction, The Red Queen: politically driven, ambitious and conspiratorial, Margaret Beaufort was powered by a belief in her religious destiny to bring her son, Henry VII to the throne of England. American composer and conductor Eric Whitacre talks about his virtual choir combining 185 voices in 12 countries which has become an internet phenomenon. With every new horror film claiming to be the 'sickest film of all time' and with the upcoming release of The Human Centipede, Meat Grinder and Saw 3D, film critics Kim Newman and Tim Robey assess whether the horror genre has gone too far with the gore. Also, Stephen Armstrong on the best stand-up routines so far at the Edinburgh Fringe and how comedians are coming to terms with a coalition government. Producer Gavin Heard.