Ghostbusters: Afterlife cast members have mentioned Bill Murray's return, but nothing has sounded like a definitive answer. Today, following an interview with Murray from the set of the film that was published by Vanity Fair, Fans now have the confirmation they've been looking for....that wearing the proton pack is a pain in the butt. Oh, also that Murray, Dan Aykroyd, Ernie Hudson, Annie Potts and Sigourney Weaver have all stepped onto the set and are officially back.