Over the centuries, and even today, the Bible and Christian theology have helped justify the Crusades, slavery, violence against gays, and the murder of doctors who perform abortions. The words themselves are latent, inert, harmless - until they aren't.

While researching 'The Submission,' I went to a protest against the Ground Zero mosque in New York when I was about to give birth to twins. It was about 100 degrees. People thought I was very dedicated.

My children, who are almost two: watching them develop has made me pay much closer attention to how we become who we are.

As a reporter you tend to seek coherence from your subject or your source - it all needs to add up and make sense. In truth, in reality, there's often a great deal of murkiness and muddiness, confusion and contradiction.

In Germany, you have a huge official memorial to the murdered Jews and then you have this artist who's been putting these stumbling blocks, these brass cobblestones, outside the houses Jews were taken away from. It's somewhat controversial and has met some resistance.

So the premise of 'The Submission' is that there's an anonymous competition to design a 9/11 memorial and it's won by an American Muslim, an architect born and raised in Virginia, and his name is Mohammad Khan.

I found 'The Twin' sitting on a coffee table at a writers' colony in 2009. It carried praise from J.M. Coetzee. That seemed ample justification for using it to avoid my own writing. I finished it - weeping - a day later, and I've been puzzling over its powerful hold on me ever since.