Pokerface

Betty and Frank enter an underground speakeasy in the 1920s. They set themselves up for a game at the gentleman-run table. Everyone doubts Betty’s abilities, due to her lack of knowledge, but they let her play.

George, the top dog at the table, mocks Betty throughout the game, but is left speechless when she places down the winning hand. Taking all his money, Frank and Betty leave the speakeasy and are revealed to be working with the cops all along.