What would you do if you saw an actual ghost in a haunted house and that ghost wasn’t meant to be in that haunted house? And , also, what if it was following you around an you were the only one who could see it?

If ghosts, demons, maybe even Freddy Krueger were all real, how would the police, FBI and so on protect the public?

I want to try making these with my camera at home, but i just can’t figure out how they did it! I can make pics of ghosts using light and words using light, but im stuck on creating the ectoplasm they used to create in like the 1900s during seances and stuff.

What are the main states in the U.S. that were known for paranormal phenomena in the 1930s (I need the answer as I am doing a project for school). Thank you!

People seem to believe that ghosts draw energy from appliances and batteries and yet ghost stories have been around since before those things were invented, how did ghosts cope without electricity in the past?
Also, where did the idea of ghosts using electricity originate?