Doing press for Avatar, Sigourney Weaver reportedly revealed some plot points for Ghostbusters 3 to the UK media:
"I know that my little son Oscar -- who was kidnapped from me -- I think he has grown up to be a Ghostbuster.
"I might be in it; I see nothing wrong with being in it, although I don't think I will have a big part. I think Bill Murray has a little more to do with it -- I think he might be a ghost." READ MORE
Why Ghostbusters 3 has been so slow to come out