Doomed at Sundown (1937)

Bob Steele stars in this B western about a footloose young man who suddenly gets a mission in life when his sheriff father is gunned down. The killer uses a knife with his left hand and most likely to be found in a scurvy outlaw nest that even the law gives a wide berth to.

The outlaw leaders are Warner Richmond and Earl Dwire, a pair of B western veterans who don't much like each other, but have to work somewhat in cooperation. I have to say this was most clever the way Steele exploited their dislike and mistrust of each other to accomplish his mission.

Doomed At Sundown gets an extra point or two for an interesting plot to the story. B western fans will applaud.