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The Stool Pigeon is a 2010 action thriller film directed by Dante Lam and starring Nicholas Tse, Nick Cheung and Gwei Lun-mei. A Hong Kong-Chinese co-production, the film is about police detective, Don Lee (Cheung), who uses informants to gain information about gangsters. Lee begins to feel guilty when his informants are caught, but sends out a street racer named Ghost (Tse) as an informant to gain information about a gangster name Barbarian.