Infernal Affairs

Infernal Affairs is a 2002 Hong Kong crime-thriller film directed by Andrew Lau and Alan Mak. It tells the story of a police officer who infiltrates a triad, and a police officer secretly working for the same gang. The Chinese title means "The Unceasing Path", a reference to Avici, the lowest level of hell in Buddhism, where one endures suffering incessantly. The English title is a word play combining the law enforcement term "internal affairs" with the adjective "infernal". Due to its commercial and critical success, Infernal Affairs was followed by a prequel, Infernal Affairs II, and a sequel, Infernal Affairs III, both released in 2003.
Pre-release publicity for Infernal Affairs focused on its star-studded cast (Andy Lau, Tony Leung, Anthony Wong, Eric Tsang, Kelly Chen and Sammi Cheng), but it later received critical acclaim for its original plot and its concise and swift storytelling style. The film did exceptionally well in Hong Kong, where it was considered "a box office miracle" and heralded as a revival of Hong Kong cinema which at the time was considered to be direly lacking in creativity. Miramax Films acquired the United States distribution rights of this film and gave it a limited U.S. theatrical release in 2004.
Infernal Affairs was remade^[1] by Martin Scorsese in 2006 as The Departed, which went on to win the Academy Award for Best Picture.

                                                                Theatrical poster

Traditional	無間道
Simplified	无间道
Directed by	Andrew Lau Alan Mak
Produced by	Andrew Lau
Written by	Alan Mak Felix Chong
Starring	Andy Lau Tony Leung Anthony Wong Eric Tsang
Music by	Chan Kwong-wing
Cinematography	Andrew Lau Lai Yiu-fai
Editing by	Danny Pang Curran Pang
Studio	Media Asia Films Basic Pictures
Distributed by	Media Asia Distribution Miramax (U.S.)
Release date(s)	12 December 2002
Running time	101 minutes
Country	Hong Kong
Language	Cantonese
Budget	HK$40,000,000
Gross revenue	HK$55,057,176