>> do you have a suicide? do you have an accident? or do you have a homicide? >> florence's family ruled out suicide as a possibility. >> there's no way that she could have contemplated suicide for a number of reasons. number one, she would have never left her children parentless. >> an accident seemed like a distinct possibility. the railing on the deck outside the ungers' cabin was freshly broken. it looked as if she were sitting or leaning on it and it gave way, causing her to fall to the boat launch below. but how did the body get into the water? mark unger hired a private independent forensic firm to find out why. they concluded that with florence falling 12 feet from the deck, the momentum of the fall carried her forward from the point of impact. >> they produced five different scenarios, computer animations that showed different ways that florence could have possibly ended up in the water.