Park Chan-Wook's 'Vengeance' trilogy concludes with this chilling thriller. Lee Yeong-ae plays Geum-ja, a woman imprisoned for the kidnap and murder of a five-year-old. Converted to Christianity in prison, she is released early but no-one can imagine the vengeance she plans. Her obsession is with her high-school teacher Mr Baek. Flashbacks to Geum-ja's time in prison introduce her fellow prisoners, whose skills may help in her task, while her revenge fantasies are played out in a bleak, bleached landscape. But, as in Oldboy, Chan-Wook introduces a twist: an unexpected, terrible truth that may make any victory bitter-sweet.