Los Angeles, 1928; Saturday morning in a working-class suburb, Christine Collins says goodbye to her son Walter and leaves for work. When she comes home she discovers he has vanished. A fruitless search ensues, and months later, a boy claiming to be her nine-year-old lad is returned. Dazed by the swirl of police, reporters and her conflicting emotions, Christine allows him to stay overnight, but in her heart she knows he is not Walter. As Christine pushes the authorities to keep looking, she swi find out more...