Lady Vengeance (18) <!-- none onestar twostar threestar fourstar fivestar -->

Park Chan-wook's revenge thriller completes a trilogy begun with Sympathy for Mr Vengeance and followed by Oldboy. It recounts, with characteristic remorselessness, the story of Lee Geum-ja (Lee Yeong-ae), a young woman jailed for the abduction and murder of a boy. But another horrifying story lies behind this one, and concerns the evildoing of Geum-ja's former teacher (Choi Min-sik); 13 years later his one-time pupil emerges from prison with retribution on her mind. The cult of Korean sadism is fast approaching saturation point, and this time it underscores a diffuse and unsatisfactory plot. There's nothing wrong with movies that require a strong stomach, but they're only interesting if they also have a heart.