The Upper Hand (1966)

Set against the backdrop of Paris, a gold smuggler finds himself in a fierce battle with rival gangsters eager to claim their share of the lucrative trade. Tensions escalate when the mob arrives, complicating matters further. Amidst the chaos, a covert agent from the US Treasury Department works diligently to penetrate the smuggling operation, adding another layer of intrigue and danger to the already volatile situation. As loyalties shift and rivalries intensify, the stakes become dangerously high in this gritty crime drama.