Ep 9. Lights! Camera! Haunting!

The Real Ghostbusters season 4 episode 9, "Lights! Camera! Haunting!", follows the Ghostbusters as they are hired to investigate strange occurrences on the set of a movie being filmed in an old, supposedly haunted castle. They arrive to find that the cast and crew have all been experiencing spooky incidents during filming, such as lights turning on and off on their own, mysterious whispering voices, and objects moving by themselves.

As the Ghostbusters explore the castle, they begin to suspect that something more sinister is at play. They discover evidence of an ancient cult practicing dark magic in the castle, and soon realize that the leader of the cult is trying to use the movie set as a tool to summon an ancient, powerful demon.

With the help of the movie's director and his team, the Ghostbusters work to stop the cult leaders from completing their ritual and unleashing the demon on the world. They use all their knowledge and skills to fight off the ghostly entities and prevent the demon from breaking through into our world.

As the episode ends, the Ghostbusters emerge victorious and the movie's production continues without any more hauntings. The team reflects on the importance of their work in protecting people from dangerous ghosts and supernatural phenomena, and head off to their next adventure.