Wow, what an ending. Nice work with this.

Have to admit, it is unique. Even at three years old, you'd expect David to have some memory of the house, the killing...unless, of course, he repressed it. That's entirely realistic, that alone could introduce a whole subplot of adoptive parents desperate to hide the truth from him, spare him the trauma. The whole tension of the story could ride on this inexplicable premonitions, letting his curiosity get the best of him, leading up to the horrible truth that the killer is his natural father. Goes along with the suggestions for more characterization, though even if you don't develop it further, the story as is shows impressive imagination and originality. As always, look forward to reading more.

...whoa, I'm really freaked out now. I did not expect David to be one of the sons. This reminds me of the amityville horror and some supernatural episode I watched the other day.
Great job!

Simply amazing.
Very unique plot.
Though the characters could have been more well developed.
It was great.

Present tense is a hard tense to write in since most fiction stories we read (nowadays) are written in the past tense. I thought you did a good job keeping with the tense. There were a few points where it should/could have been a "would" or "had" inserted before a verb but for the most part the tense was constant.

As for the plotline, I thought there could have been more character development.

Nngh, Emily, that gave me shivers. XD I loved it.