The Trail Went Cold

March 10, 2005. Foley, Missouri. 13-year old Bianca Piper is reported missing by her mother, Shannon Tanner, who claims that she dropped Bianca off on a rural road about a mile from their residence. Bianca struggled with numerous mental health issues, included attention deficit hyperactive disorder and bipolar disorder, and had just gotten into a dispute with her mother. According to Shannon, she followed the recommendation of one of Bianca’s therapists and drove her daughter down the road, so that she could walk back home alone and deal with her aggression, but Bianca never arrived. Since investigators are unable to find her, they start believing that Bianca was abducted and became the victim of foul play. Was Bianca Piper harmed by a stranger or did something else happen to her? On this week’s episode of “The Trail Went Cold”, we explore a missing children’s case which remained unsolved for two decades. If you have any information about this case, please contact the Lincoln County Sheriff’s Office at (636)