The Cyclone Kid (1942)

Big Jim Johnson is a cattleman who wants to run all the settler's off the land. He has a number of hired guns including Johnny Dawson. Doctor Bill Dawson comes to town and wants to see the trouble stop, but all that he sees is Sullivan murdered and a Judge who is working for Johnson. Johnny is ordered to get rid of the Doc, who has decided to side with the settlers. Johnny as no choice but to side with his brother against Johnson, and that is a tall order.