With religion coming under increasing attack from atheists and sceptics, The Chief Rabbi, Lord Jonathan Sacks, goes into the lion's den, putting his faith publicly on the line by debating with some of the sharpest critics of his faith. Howard Jacobson believes ritual demeans religion, Alain de Botton doubts that any one faith has the truth, Professor Colin Blakemore thinks science makes religion redundant, and Professor Lisa Jardine questions why God allows evil and suffering in this world.