I wanted to take a damaged individual in a damaged society with damaged relationships between nations and take a look at how this individual survives amongst them, and that for me as a writer is the connection that you needed to get inside the skin of the main character and wonder how he's going to cope with all this.

I think it creates so many more opportunities and pitfalls in that you are treading on fresh snow, so you're in a new place.

I've spent three hours with Snoop Dogg, talking about how he loved [Peaky Blinders series]. And David Bowie loved it. The late Leonard Cohen was a fan. It struck a chord with various people that I didn't think it would.

I think certain periods of history don't get dealt with because I think historians, and it's their job, but they look back and look for patterns. They look for sequences and they look for reasons, and certain periods of history don't fit with the general pattern of 1500 to the 20th century, during which there's the creation of the United States. At this time of 1814, two nations who would eventually become close allies were at war with each other, so it doesn't quite fit.

[The film Woman Walks Ahead] is from a long time ago. I wrote that ages ago. It looks gorgeous and Jessica [Chastain] is so good that I've got high hopes.

I visited the set [of Allied] a few times, and it was a great set to visit. A lot of it was in West London, in an old Gillette factory. You'd go into the factory through the security, and then there were a lot of camels and goats. Most sets are really dull, but this was fantastic.

I read more and more and I came across this character, Caroline Weldon. Sometimes in history, you find these people that no one would dare create. They're too mad.