They say the memory of what happened on July 20, 1980, will forever haunt their family, the day Mary was murdered. More stories, here: https://www.wbir.com/ Subscribe to WBIR for exclusive content: https://www.youtube.com/c/WBIR10 WBIR Channel 10 in Knoxville, Tennessee produces award-winning, community-centered content "Straight From The Heart" of East Tennessee. We strive to be good citizens, to do what is right, and to be fair and honest. We care. Follow WBIR on Social: Facebook: https://www.facebook.com/WBIRChannel10 Twitter: https://twitter.com/wbir Instagram: https://www.instagram.com/wbirchannel10/ TikTok: https://www.tiktok.com/@wbir