Eddie Coyle is a small-time punk with a big-time problem - who to sell out to avoid being sent up again. Eddie works for Jimmy Scalisi, supplying him with guns for a couple of bank jobs. But a cop named Foley is onto Eddie, and he's leaning on him to finger Scalisi, a gang leader with a lot to hide. These and others make up the bunch of hoods, gunmen, thieves, and executioners who are wheeling, dealing, chasing, and stealing in the underworld of Eddie Coyle.