In December of 1974, just two days before Christmas, three girls, ages 17, 14, and 9, disappeared while shopping at a mall in Fort Worth, Texas. 50 years into the investigation, thousands of leads have been followed up on, and hundreds of people have been interviewed, but none of the girls have ever been found. What happened to them, and does the person responsible for their disappearance have more victims? This is the story of the Fort Worth Missing Trio.