I was about 13 years old when this happened. My parents were out at a concert with some friends and I was at home watching my little brother. The first part of the night was fine but at about ten o'clock I heard a high pitch scream. I figured that it was my little brother having a bad dream so I went up to go check on him. When I got in to his room he did not seem as if he was having a bad dream. I stayed in there for a moment to see if he would scream again.
He didn't, someone else, or something else, did. I was still in the room when another scream came from the down stairs. I freaked out. I called my parents crying and telling them to come home. They just told me that it was all in my head and for me to go and get some sleep. I did not feel safe with my little brother being in his room all by himself so I brought him to sleep with me. About ten minutes after I got in bed a door slammed. None of the windows were open so it wasn't the wind. I decided to go look for whatever was making all of the noise. I brought my guitar with me to hit it with... Like that would help any. I saw nothing upstairs or on the main floor but when I went into the basement there was on unfamiliar figure huddled in the corner. I did not think it saw me but it was crying very hard. I do believe it was a child, about the age of four. I was freaked out by what I saw. It did not look threatening. It was fairly translucent but not all the way. I went in my room and locked the door and waited for my parents to get home. I fell asleep before I could tell them about everything.
The next morning I did some research on the house. We were living in and it said there was jewish family that lived during the Holocaust. They all were taken to auschwitz concentration camp, all but the youngest, they have no idea what happened to that one child and I believe that I saw the one child that was left behind and that he came back looking for his family and they were not there.
After my experience I will always believe in ghosts.