The following strange and pathetic incident occurred in a well-known Square in the north side of the city. In or about a hundred years ago a young officer was ordered to Dublin, and took a house there for himself and his family. He sent on his wife and two children, intending to join them in the course of a few days. When the latter and the nurse arrived, they found only the old charwoman in the house, and she left shortly after their arrival. Finding that something was needed, the nurse went out to purchase it. On her return she asked the mother were the children all right, as she had seen two ghostly forms flit past her on the door-step! The mother answered that she believed they were, but on going up to the nursery they found both the children with their throats cut. The murderer was never brought to justice, and no motive was ever discovered for the crime. The unfortunate mother went mad, and it is said that an eerie feeling still clings to the house, while two little heads are sometimes seen at the window of the room where the deed was committed.
Commentary: Not a whole lot to add to this one. It's a fairly classic ghost story: evil deed done in the house, house now is haunted. I like it because of it's simplicity, and the fact that it contains a double horror (murder followed by haunting) makes it all the more effective.
I suggest checking out the book from which it came (follow the link up above), as it is worth the time. The language is a bit archaic, having been written as it was during the early 20th century, but even that lends a good deal of charm to the stories contained therein. One thing that I have noticed is that identifiable information is frequently left blank - the names of roads are crossed out, or people's names are not mentioned. I wonder whether this is due to the authors or publishers trying to protect the privacy of people mentioned within the book, or if it is due to the authors trying to provide unfalsifiable stories.
Sources: Published book