Lawless Breed (1946)

Government agents Ted Everett and Tumbleweed are sent to Spearville, Texas, where the law agencies have failed to stop a series of bank robberies. Arriving incognito, they become involved with the gang, and end up being accused of murdering banker Bartlet Mellon. They escape a lynch mob and return with evidence that Mellon has faked his death, hoping to gain the insurance, and is also leading the gang under another name.