Unsolved Mysteries : Season 13 Episode 23

Black Hope Curse - For the families who bought new houses in a subdivision near Houston, Texas, life in their dream homes quickly turned into a nightmare. When one couple began to dig a swimming pool, they unearthed two bodies and were horrified to discover that their homes rested atop an old slave burial ground. And that was only the beginning of their frightening - and unexplainable - odyssey.