I encountered this when I was about, oh I don't know, 9 maybe? I had an invisible friend. His name was Anthony. We used to play and talk and do everything together. Until I found out the truth. Anthony started doing weird things like cussing at me and then going into the bathroom and crying. My Mom just blew it off because she thought I was just playing. Until one day when Anthony just cracked. We were playing hide and go seek. When Anthony couldn't find me he chose to give up. He was a real sore loser that day and all of a sudden, a figure appeared. Anthony said, "No Mom, please don't" She obviously didn't see me. And she started beating him up. I told my Mom about it and she said it was going too far. So I did some research and found something out.
There really was a boy named Anthony Harmone (Pronounced Har-Mon). He died of child abuse 50 years before that day exactly. So I found Anthony in the closet crying his poor little eyes out. I said, "Anthony what's wrong" and then he started talking about how his Mom kept hitting and hitting. And he confessed that she killed him fifty years ago in that same house. He said he could not find the light and I helped him.
A few days later he said, "I see a light _________, what's happening?". Then he started walking toward that light. I haven't seen him, or his mother since. Sometimes I hear a child's laugh or a "Thank you" But I'm glad of what I did.
I miss you Anthony!