A six-year-old disappears in a bustling Florida mall. Minutes later, his parents’ worst nightmare begins. On this episode of Killer Thriller, JoBeth Williams ("Poltergeist", "The Big Chill") takes us deep inside “Adam,” the harrowing true story of the 1981 abduction and brutal murder of Adam Walsh that riveted a nation and shattered one family’s world. Williams, who portrays Revé Walsh, unpacks the gut-wrenching guilt and sorrow of a mother who stepped away for “just a minute,” the unbearable search that followed, how the crime tore at a marriage and ignited a father’s obsessive crusade for justice.