This obscure film is actually a pretty good B movie - murder suspense-thriller. But if one does not like extremely manipulative plot techniques, then it is best to stay away from this one, because it will leave you groaning most of the way through. Brigitte Lin and Joey Wang are to me the best Hong Kong actresses in recent years. All the current young things are no comparison at all in acting ability. They don't get much chance to show off these skills since the plot is so contrived, but they still pull it off to a good degree. Joey Wang plays a doppelganger twin sisters (one very good, the other very bad), Lin plays a domineering business executive who is being blackmailed by her most trusted secretary. All this leads to an accidental murder, and attempted coverup. It's all really great fun when taken tongue in cheek. (Though very serious.) I recommend this film to fans of either actress, or to those who like circa-1980s (USA) manipulative TV movies, which this is in that genre.