A small, well-tended garden is all that remains at 300 Sorghum Mill Drive in this quiet town.Even on a dreary, rainy January day, with little abloom, the spot is peaceful. It shows few signs of the horrifying home invasion that killed a mother and her two daughters there more than two years ago, robbing a man of his wife and children.The killings shook power leveling aionthe suburban community, prompted legislative changes in the state, and attracted the attention of the national media. 
