The Crooked Web(1955)

Following WWII, ex-G.I. Stan opened up a drive-in restaurant. His girlfriend, Joanie, is one of the car hops. They want to get married someday, but the less-than-stellar business the restaurant takes in puts a hold on that plan. One day, Joanie's ne’er-do-well brother Frank blows into town with a money-making scheme. She's against it, but Stan - an inveterate gambler - finds the promise of riches too seductive to resist…