Bad Day at Black Rock is a 1955 American neo-Western film directed by John Sturges with screenplay by Millard Kaufman. It stars Spencer Tracy and Robert Ryan with support from Anne Francis, Dean Jagger, Walter Brennan, John Ericson, Ernest Borgnine and Lee Marvin. The film is a crime drama set in 1945 that contains elements of the revisionist Western genre. In the plot, a one-armed stranger (Tracy) comes to a small desert town and uncovers an evil secret that has corrupted the entire community.

Walter Andrew Brennan was an American actor and singer. He won the Academy Award for Best Supporting Actor for his performances in Come and Get It (1936), Kentucky (1938) and The Westerner (1940), making him one of only three male actors to win three Academy Awards, and the only male or female actor to win three awards in the supporting actor category. Brennan was also nominated for his performance in Sergeant York (1941). Other noteworthy performances were in To Have and Have Not (1944), My Darling Clementine (1946), Red River (1948) and Rio Bravo (1959). On television, he starred in the sitcom The Real McCoys (1957-1963).