Brian Helgeland — American Writer born on January 17, 1961,

Brian Thomas Helgeland is an American screenwriter, film producer and director. He is most known for writing the screenplays for L.A. Confidential, Mystic River, and A Nightmare on Elm Street 4: The Dream Master. Helgeland also wrote and directed 42, a biopic of Jackie Robinson, and Legend, about the rise and fall of the Kray twins... (wikipedia)

Working on an adaptation is not as satisfying, because it's not your original work: you're interpreting. With 'L.A. Confidential,' I loved the book. In that case, I felt I was guardian of the work, staying as true to the novel as I could. I've since met the novelist, and he loves the movie and the script.
It's as boring to see a completely evil villain as it is to see a completely good guy.
It's such an egotistical thing to be able to just stand there and say, 'Action!' It's like being a little mini-god.
As much as I love period movies and especially more swashbuckling movies, I think that sometimes they tend to be, umm... it's hard for the audience to relate to them.
I don't really write with living actors in mind. I guess I write for dead actors. I'll think of like, you know, Burt Lancaster would be good in this part, and so on. With 'L.A. Confidential,' it was like, 'Wouldn't it be cool if Dean Martin played the Kevin Spacey part?'