barbara hoyt remembers what happened next. >> i heard a scream.e any way to describe what that sounded like? >> just pure horror. >> did you have any idea whether it was a human or an animal or -- >> i knew who -- it was shorty. >> you knew it was shorty? >> i recognized the voice. >> this was the one murder that manson was personally involved in. and shea was sort of hacked to pieces. >> reporter: manson decided it was time to get out of l.a. maybe he was feeling the heat from that raid. or maybe he wanted an even more remote place to keep his family under his control. >> to him, the whole idea of control is not just having people worshiping you, but having people follow your orders in ways that contradict common sense. >> reporter: that is, fleeing an apocalyptic race war helter skelter. he moved them out to an old homestead, called barker ranch -- over 200 miles from los angeles, now part of death valley national park. yes, death valley. >> during this war, he will lead his family into death valley, where there is a bottomless pit and a city un