I don't really watch that show, but the rest of my family loves it.

The best way I can think of to tell ghosts from hallucinations is to find out if anyone else notices anything. Take the shop my parents own, for example. While there I have heard footsteps, indistinct voices, and rustling bags. I've seen doors move, and heard the bell ring when no one comes in. But my family often notices similar things.

Another building, not far from ours, has a reputation for being haunted. People have even seen full-body apperations there.

Sometimes I wonder just how much of this town is haunted.