South of the Border is a 1939 Western film directed by George Sherman and starring Gene Autry, Smiley Burnette, and June Storey.

When they arrive in Mexico they attend a fiesta, where Gene has his heart stolen by the beautiful Señorita Dolores Mendoza (Lupita Tovar).

He is informed that Dolores' brother Andreo (Duncan Renaldo) is the pawn of a gang of foreign agents operating on the island of Palmero with the objective of establishing an enemy submarine base that would put an end to Pan American neutrality.

The Consul orders Gene to leave for Palermo immediately, using the excuse that he and his men are to help Don Diego Mendoza (Frank Reicher), Dolores's uncle, with his cattle roundup.

[4] She was discovered by Warner Bros. talent scouts while singing with the Ted Weems Orchestra and signed for a role in Nancy Drew, Reporter (1939).