Walton is a known racketeer, and the sheriff is sure he’s up to no good. The trouble is that there isn’t any evidence the the lawman can haul him in on. A scuffle breaks out, the sheriff is shot, and the deputy shows his colors when he works to help cover up the murder, and look the other way.
The Texas Rangers look into the unsolved crime. Ignoring the ambiguous reports of the deputy, Jase Pierson starts from square one, and investigates the crime scene. He astutely reads the forensic evidence, and such things as tragectories of the bullets that killed the sheriff. It’s easy to piece together how the scuffle led to the killing, and that the body was moved from the scene.
Questioning the widow, Walton is mentioned as having a motive. Jase smells a rat, and does some discrete snooping without the deputy tagging along at every turn. Results from lab work is all it takes for the ranger to make his move.
Has Walton pulled his last crime? There’s a confrontation, and the finks rat each other out. Gunshots, and a chase on horseback are part of the trap to bring down the bad guys.