There's almost always a ghost in Granite Falls. It's usually in the forest and it's different each time. When I've seen them arrive it's been around the larger fishing spot at the edge of the forest.
They do sometimes start chats with my Sim, the same way that other Sims do. My Sim runs lol. Well, that is I make them run. Because its dark and spooky and its a ghost! Yikers!
I haven't seen a specific trait for it but there are traits to add ghosts to lots. You can add the Spooky Trait or the Haunted House Trait depending on which packs you own. I don't use cheats but I'm sure if there is one, someone will know.
