Jonathan Nolan, he of the Dark Knight trilogy Nolans, has been quietly beavering away behind the scenes with Person of Interest. So he's taking more of an interest in it, eh? (tumbleweed) Tonight's episode, which is the last in the current series, sees Root gaining complete access to the Machine since it's been reset. However, it still won't give up the info on Larry Slizard, the man who can get her to the Machine itself. It's all kicking off, basically.