But he can't control the odds when it comes to Ginger McKenna, the chip-hustling vamp who charms Ace and becomes his wife. He eventually doubles the mob's take and changes the rules of how the casinos are run. Sam 'Ace' Rothstein, the consummate bookie who can change the odds merely by placing a bet, has risen through the ranks of the Midwestern mob to be picked by the bosses to front their entree into Vegas.