When the sister of a border guard (Regis Toomey) is killed by a Mexican smuggler, he and his dog (Rin Tin Tin) seek him out in revenge. The plot is not great and neither is the acting despite the performances of Regis Toomey and Molly O'Day in her final film.
1/5 
Regis Toomey
Jack Mulhall
Molly O'Day
Jack Mower