On a sunny May morning, social worker Jessica Campbell sorts through her mother's belongings after her recent funeral. In the basement, she makes a shocking discovery. Two dead girls curled into the bottom of her mother's deep-chest freezers. She remembers a pair of teenaged sisters who lived with the family in 1988 as foster children: Casey and Jamie Cheng - troubled, beautiful, and wild. After six weeks, they disappeared; social workers, police officers, and Jessica herself assumed they had run away.