Gangster films focus on the lives of criminals and gangsters, often depicting rivalries and crimes plots. Early gangster films from the silent era included D.W. Griffith's 1912 film The Musketeers of Pig Alley. The 1927 film Underworld is considered the first modern gangster film. Gangster films grew in popularity during the 1930s sound era due to the public's interest in real-life gangsters like Al Capone. Iconic gangster films from this era included Scarface (1932) and Warner Bros films starring Edward G. Robinson and James Cagney. During the 1940s, gangster films took on darker, film-noir styles. Notable films included The Big Sleep