I begin by assembling notes on characters. Large swaths of the plot become clear to me as I do this.

I work within the framework of a very concerted, purely driven Protestant Christian mindset. I had dark early circumstances. I went inward. I have a sturdy will. I have a big heart. I'm a decent guy. And I have a great gift. It's blunted me to the world in many ways.

Dead people belong to the live people who claim them most obsessively.

In the time just before the bombing of Pearl Harbor, when Perfidia opens, we were pre-psychologized. There were no concepts of identity, no politics of victimization. Reparation wasn't in the language. Nobody thought about giving the great grandchildren of black slaves so much as $1.98. And all of a sudden the bombs hit, interventionism versus isolationism became a dead issue, and it was us-versus-them in a heartbeat.

I am the most well-adjusted human being I know. I started out this investigation as a very happy man with a great career. I've got the life people dream about: I am rich, I am famous, I've got a fabulous marriage to an absolutely, spell-bindingly brilliant woman.

I don't have a cellphone or a computer. I deliberately circumscribe my mental life within the periods that I write about, and the power of Perfidia is that it's the result of complete immersion. I was there for the two years that it took me to write that book.

I'm way past the idea of using ideology or political view as a gauge of human character. I simply don't believe it. And many people, I tend to think most people, feel that way. Since I don't have to worry about it, I'm happy.