house were still smoldering, as investigators dug through the debris, looking for clues. they wanted to know what caused the fire and exactly how katherine novak died there. her mother's question was more simple. >> the big thing for me, why did she not get out? but was i kept going over in my mind, why did you not get out? >> even her estranged husband paul said he was puzzled. >> i don't even know what to think about it, i was surrounded by death and violence my entire life, now it was home. >> the pathologists ruled catherine death an accident, but investigators were not so sure. they turn to attorney steve lungen. >> so despite this top it was an accident. >> yes we had a fire, and we had a death, the question of how the two of those items were going to come together would not quite the -- actually years later. >> the police, as they often do,