I have insane curiosity as to what happened in all these events. I will never know. I'm not a researcher. I don't possess that kind of mind. I have a researcher who compiles the fact sheets and chronologies that allow me to write these big books of mine.

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 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 learn things late-and only the hard way.

You try to learn who you are. You work hard. You've either got it or you don't when it comes to writing books. And you tend to only get these things if you want them, and want them to the exclusion of everything else.

I'd never been interested in the Kennedy assassination until '88, when I read Libra. And from that point, I went out and bought the existing Kennedy theory books, most of which are outlandish. But what DeLillo posits - some rogue CIA guys - is the most dramatically sound, plausible explanation for it.

Every one of my books is written from the viewpoint of cops, with the exception of my book Killer on the Road, which is written from the viewpoint of a serial killer.