Where do your most brilliant ideas come from? What's the most extreme thing  you've done when researching your book? What's the worst book you've ever  bought? Litopia After Dark this week begins to wind down for the summer holidays  with a writers' quiz. It all gets completely out of hand as the panelists give  each other marks and the bickering reaches a crescendo as they try to outdo each  other in the race to the finish line... tune in to see who wins.