A little bit gangster film, a little bit samurai flick, this 1960s French masterpiece from Jean-Pierre Melville introduces the memorable anti-hero Jef Costello (Alain Delon), a contract killer with the instincts of a Japanese warrior and the features of Adonis. After offing a nightclub owner, Costello has two big problems: his double-crossing employer, who now wants him dead, and the dogged police investigator who's determined to rein him in.