Where can you find ghosts?
If you believe in them:
Technically speaking, i DO believe in ghosts, but the correct term would probably be 'spirits'. Some of the world's best spirit trackers have not yet been able to gather enough evidence of a ghost or a spirit in sight. So, i suppose there are no tricks to find a ghost or a spirit. Companies do make technologies to find ghosts or spirits, but most of them are only 50% accurate.