Gosford Park is a 2001 British mystery film directed by Robert Altman and written by Julian Fellowes. The film stars an ensemble cast, which includes Eileen Atkins, Bob Balaban, Alan Bates, Charles Dance, Stephen Fry, Michael Gambon, Richard E. Grant, Derek Jacobi, Kelly Macdonald, Helen Mirren, Jeremy Northam, Clive Owen, Ryan Phillippe, Maggie Smith, Kristin Scott Thomas, and Emily Watson. The story follows a party of wealthy Britons and an American, and their servants, who gather for a shooting weekend at Gosford Park, an English country house. A murder occurs after a dinner party, and the film goes on to present the subsequent investigation from the servants' and guests' perspectives.
Development on Gosford Park began in 1999, when Bob Balaban asked Altman if they could develop a film together. Balaban suggested an Agatha Christie-style whodunit and introduced Altman to Julian Fellowes, with whom Balaban had been working on a different project. The film went into production in March 2001, and began filming at Shepperton Studios with a production budget of $19.8 million. Gosford Park premiered on 7 November 2001 at the London Film Festival. It received a limited release across cinemas in the United States in December 2001, before being widely released in January 2002 by USA Films. It was released in February 2002 in the United Kingdom.
The film was successful at the box office, grossing over $87 million in cinemas worldwide, making it Altman's second most successful film after MASH. Widely acclaimed by critics, it received multiple awards and nominations, including seven Academy Award nominations and nine British Academy Film Awards nominations.
The TV series Downton Abbey – written and created by Fellowes – was originally planned as a spin-off of Gosford Park, but instead was developed as a stand-alone property inspired by the film, set decades earlier.