This taut, unsentimental, Hitchcockian story of a mother defending her son at all costs is consistently unpredictable right up to its supremely satisfying climax.   When Kim Hye-ja's nameless mother of the title discovers her 27 year old son, suffering from learning difficulties, has been arrested for the murder of a young girl, she obsessively sets out to track down the real killer and prove her son's innocence at all costs.

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