King of the Texas Rangers

King of the Texas Rangers 1941 is a Republic film serial.

When Tom Kings Texas Ranger father is shot dead by Nazi saboteurs, he leaves college and joins the Texas Rangers himself. Shortly he is given the mission of avenging his fathers death and defeating the foreign agents.King teams up with Sally Crane, a reporter who witnessed his fathers murder, and Mexican officer Pedro Garcia, who shares an interest as the agents are working across the border in both countries. ........

Source: Wikipedia