scary story

I had a scary experience when I was junior high school student.
I was playing with my friends.
One day we went to the apartment of my freind.
We knew that an old lady had died on the tenth floor of the apartment building.
The apartment building had twelve floors.
We went to the top floor by elevator.
On the way, I saw something in the elevator.
My friends said that we had not seen anything.
Only I saw it.
At first I did not notice it.
But I thought that it was probably the ghost of on old lady.
The ghost rose into the air and it was semitransparent.
It's face was all bloody.
I was so scared I had goosebumps.