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 swiftly discovers that in Prohibition era LA women who challenge the system can only expect the full force of its wrath. Slandered as delusional and unfit Christine finds an ally in activist Reverend Briegleb, who, to help her look for her missing child, joins her battle with the police bureaucracy. Clint Eastwood's latest film is an atmospheric and provocative dramatic thriller based on real events.