"Based on the motion picture Infernal affairs, directed by Andrew Lau Wai Keung/Alan Mak, screenplay by Alan Mak/Felix Chong."

Originally released as a motion picture in 2006.

Special features: 9 additional scenes with introductions from director Martin Scorsese; "The story of the Boston mob:" the real-life gangster behind Jack Nicholson's character; "Crossing criminal cultures:" how Little Italy's crime and violence influence Scorsese's work; theatrical trailer.

Director of photography, Michael Ballhaus ; editor, Thelma Schoonmaker ; music, Howard Shore ; costume designer, Sandy Powell ; production designer, Kristi Zea ; visual effects supervisor, Rob Legato.

Leonardo DiCaprio, Matt Damon, Jack Nicholson, Mark Wahlberg, Martin Sheen, Ray Winstone, Vera Farmiga, Anthony Anderson, Alec Baldwin.

In South Boston, the Massachusetts State Police are waging a war on Irish-American organized crime. Undercover cop Billy Costigan is assigned to infiltrate the mob syndicate, which is run by gangland chief Frank Costello. Billy quickly gains Costello's confidence. Colin Sullivan is a hardened young criminal who has infiltrated the police department as an informer for the syndicate. Colin is rising to a position of power within the Special Investigation Unit. Each man becomes deeply consumed by his double life, gathering information about the plans and counter-plans of the operations he has penetrated. But when it becomes clear to both the mob and the police that there are moles in their midst, Billy and Colin are suddenly thrust into danger. Afraid of being caught and exposed to the enemy, each must race to uncover the identity of the other man in time to save himself.

MPAA rating: R; for strong brutal violence, pervasive language, some strong sexual content and drug material.

Blu-ray disc, region 1; PCM, Dolby Digital 5.1 surround, 1080p High Definition, (special features only): Dolby Digital stereo., 480i or 480p Standard Definition. This Blu-ray disc will not play in standard DVD players.

This DVD is copy protected and may be played only on licensed devices.

English, dubbed French or dubbed Spanish dialogue, English, French or Spanish subtitles; closed-captioned.

Academy Awards, 2006: Best Achievement in Directing (Martin Scorsese) ; Best Achievement in Editing (Thelma Schoonmaker) ; Best Motion Picture of the Year (Graham King) ; Best Writing, Adapted Screenplay (William Monahan)

Golden Globe, 2006: Best Director - Motion Picture (Martin Scorsese)