I would love to add a scene to a ghost movie, imagine a room or basement full of baby ghosts and finding out the place used to be an abortuary.
Speaking of that, theres this tv show called Celebrity Ghost Stories. One of the episodes (17th episode of the 4th season) has a segment on comedian Lewis Black. Lewis tells the time of when he was a young 20 something kid. He was hired to help build a new cabin in the woods of Minnesota. While working on that job, he was given a place to stay in another cabin right near the one they were building.
One night when trying to to get some sleep, he heard the sounds of babies crying. At first he thought it was the sounds of animals in the woods, but then he came to realize that the sounds of crying babies were coming from the walls of his cabin. He would hear these sounds the next morning, the next night, etc. It sounded anywhere from only one baby to a dozen babies crying.
A couple of days of this or so, one of his fellow co-workers told Lewis about the history of the cabin he was staying in. Back in the days when abortion was strictly illegal, the town veterinarian used to perform illegal abortions in the cabin. After his co-worker told him that, according to Lewis, he never heard the sounds of the crying babies inside the cabin ever again. He guesses that the spirits of babies simply wanted him to know.
In the HBO series Six Feet Under one of the characters has a dream and he sees little children playing. He asked who they are ....they were the children who would if been but his girlfriends hadn’t aborted them.