Overview:Every small town has a haunted house located within its borders. If not haunted by things unseen and unknown, then a place borne of violent tragedy. Some of these houses become legendary and enter the national conscience. The Amityville Horror in upstate New York comes to mind. Tonight is the five-year anniversary of the Cavanaugh family massacre, and for the first time in several years someone will dare to enter the belly of the beast in Edgewood, Maryland--the Murder House.