I remember a woman whose teenage son had died, I think at a summer camp.  She was killing and burying teenage boys as friends for her dead son’s ghost, as he would be lonely out in the woods.  I remember police finding the bodies in the woods and then later, interviewing the lady.  She told her story as to why she did it and behind her in the police room were the ghosts of the teenage boys.  When she finished, it was as though she set them free and they were happy, and left the building together as friends walking off down a corridor where one of them jumped up to hit the ceiling light as he passed.  They seemed quite happy together.  I think they faded away as they reached the end of the corridor.