What are the really big questions for Matt Smith's Doctor Who finale?

Steven Moffat reveals what we should be asking, even if he's not ready to answer. Screenwriter David Goyer explains why Superman can be a killer, and what that means for his future film appearances. Runaways writer Drew Pearce thinks there's still a chance the movie could happen. Plus tons more on Person of Interest, » 9/25/13 6:00am 9/25/13 6:00am