Fan CastingGhostbusters: Alive Again (2014)

Before the 2016 reboot, there was a unmade third GB movie in the 2010s in the works. The movie opens with Anna, many of the main characters don't know each other. Oscar is a shinning academic and has an experimental machine that is responsible for bringing about potential paranormal calamity. The machine is being funded by an org or person named "Parsons." Friend Jeremy pursued a "worthless degree" he didn't believe in but may be just expert Oscar needs for help. Oscar goes to the firehouse to seek the old crew, Egan and Ray are dead but Ray posseses Oscar. (Another GB was alive but it's not know who. But Venkman was mentioned) Dean is the son of Ray, who creates legal waivers and ignores cease and desist letters. The sky bulges and "something" tries to push through. Oscar is possessed at a restaurant and can't move of his own will, Anna meets a ghost at an operating room, and would involve a "Hellion" with ghosts going into mouths of humans/animals. And featured scenes of a toy stores with possessed toys, a montage of ghosts scaring New Yorkers and the return of Stay Puff near the end. The cast and director were all official castings at the time. And the actors were Ivan Reitman before he died.