During the last decade, one of the most salient tendencies in the stream of American Pulitzer-prized drama is the grief and conflict of the family who lost their members. Mainly in the son-lost plays, the space reveals the existence of the lost child, and the remaining family perceives the corporality of the house or the space as the trace of the son. One of the Pulitzer-prized plays which reveals the spatial existence of a lost child figure, Next to Normal closely deals with the actual work of medication and mental suffering of the mother and also with the visualization of ghostly dominant son. In this paper, the bereavement of the family members which is eventually visualized on the stage will be analyzed. The psychological feature could physically reveal the existence through the spaces where each character dominates, so the aim of this research is to figure out the dominant power of the existing ghost who literally domineers the whole characters and the stage as well. And furthermore, in the conclusion, this study would trace how the spatial existence of a lost child is visualized on the stage by understanding the actual production on the Broadway.