So you’ve had an encounter with a ghost. All of a sudden the air turned cold; a light flickered; a shadowy figure floated in a dark corner; when you asked if you were in the presence of a spirit, the Ouija planchette in your shaking hand dragged itself toward “YES.” Naysayers be damned, you know you’ve been contacted…
source https://lifehacker.com/what-to-do-if-you-see-a-ghost-1845527063