As mentioned when I began the book, this is an idea I've had for a very long time that I simply did not know how to write. When I boiled down the ideas in December it came down to a non-fiction book that would have been simple, a thriller, which would not have been simple, and this idea. And one night, it all just came to me, how to write it, the way in, and once I had that it just began feeling like the right thing at the right time and Muse Margaret, after hearing the three ideas, went for this one very rapidly.