there's a boat landing here with a fancy name, peachtree landing. morgan elvis: it's a quiet spot that you can go think. you don't get a lot of that in a small town. so when you find a spot, i mean, you go all the time. andrea canning: what happened here to 20-year-old heather elvis one december night in 2013 became an enduring mystery. debbie elvis: i know that there is no way that heather would not come home if she could come home. no way. morgan elvis: you don't realize how much somebody's face means to you until you can't see it anymore. andrea canning: a family anguished, clinging to hope, searching for answers. a journey that would consume them for years. one of my best friends came to the house. he looked at me and he said-- he said, i hope she didn't suffer. i can't get that thought out of my head. andrea canning: heather was born in 1993. the middle kid sandwiched between elder brother, chris, and younger sister, morgan. as morgan vividly remembers, heather would never let a label define her. morgan elvis: she wasn't really a girly girl or