Jason Reitman Explains the Care That Went Into Ghostbusters: Afterlife's Biggest Surprise

The third act of Ghostbusters: Afterlife is filled with huge reveals. Some of them, even if you haven't seen the film, you probably know about--like the fact that Bill Murray, Dan Aykroyd, and Ernie Hudson all appear, reprising their roles from the original. Others, however, have still remained relatively secret...