The families of Tamika Houston and Pamela Butler have survived the unthinkable.  Tamika and Pamela went missing and would later be found murdered. Tamika's family had to fight for media coverage while Pamela's brother battled to bring his sister's killer to justice. This special episode of Untold Stories: Black and Missing was recorded at Crime Con in Nashville.  Rebecca Howard and Derek Butler share how they turned their pain into purpose.