Director Paul Thomas Anderson and actor Daniel Day-Lewis talk about "There Will Be Blood."
The origins of There Will Be Blood can be traced to a bookstore in London, where homesick Paul Thomas Anderson spotted the Upton Sinclair novel Oil!, which then became an unlikely life raft for the struggling writer/director.
"I had been trying to write something, anything — just to get something written," Anderson says. "I had a story that wasn't really working. It was about two families, fighting. It just had that premise. And when I read the book, there were so many ready-made scenes and the great venue of the oil fields and all that. So those are all of the obvious things that seemed worth making a film about."