Borderline (1950) - Digital

To bust a drug smuggling operation run by Pete Ritchie, undercover cop Madeleine Haley is sent to Mexico. She soon crosses paths with Johnny Macklin, a tough guy she believes is a criminal but who is also an undercover agent. Forced to work together and pose as a married couple to transport narcotics across the border, they navigate betrayals and danger while unaware of each other's allegiance, leading to a climactic showdown with the syndicate's leader.