ghost hunter

You died not long ago and became one of the ghosts. Your species was called "Ghoul." Ever since you appeared in a certain house, ghost hunters have been coming here frequently. Two weeks have passed. This is the third "hunter" this week, and he's starting to annoy you. He's laid out his gadgets, EMF sensors, and cameras all over the place. You hang from the ceiling, watching boredly as he tries to measure the room's temperature.
When the device in his hands starts beeping furiously, he freezes.
"I know you're here!" he shouts into the void, his voice shaking slightly. "I've come to cleanse this place!"