They seem to really be zeroing in on the families property. After it being widely reported that, "after expert analysis of surveillance video" warrants were executed, I looked up the property on my google earth. In looking for a probable path from where her car was found to the C/M property, I started looking for where they got the surveillance video. Across the street from the property is a Horry County Electric substation. A bit of research and I found an article from 2011 that because of copper thefts - they are equipped with cameras.
http://www.carolinalive.com/news/story.aspx?id=500780#.UwfqmvldX9Y
Does anyone know if those cameras have audio? Something this inquiring mind would like to know. Hmmm . . .