"Departed" is a 2006 crime thriller film directed by Martin Scorsese. It is a remake of the Hong Kong film Infernal Affairs. The story revolves around an undercover cop, Billy Costigan, who infiltrates a criminal organization led by Frank Costello, while simultaneously, a mole within the police department, Colin Sullivan, works for Costello. The film explores themes of loyalty, betrayal, and identity. It features a star-studded cast, including Leonardo DiCaprio, Matt Damon, and Jack Nicholson. "Departed" received critical acclaim and won four Academy Awards, including Best Picture and Best Director.