The character of Jackson Gallagher is seen sitting behind Benji Galt during the courtroom scenes while at the same time visited on his farm by Sheriff Galt during his investigation of the source of the new silver dollar.
Once everyone figures out that the sheriff's son didn't kill the stage driver, they all agree that he couldn't have known the stage was even coming, yet this defense was never raised once during the trial that convicted him.
The newspaper editor finally deduces that the telegrapher is the only other one (besides the stage owner) who could have known about the stage coming because he was the one who transmitted the scheduling messages, something so obvious everyone in the town should have known it, but for some reason only the newspaper editor, under great duress because of his unrequited love for the woman who loved the sheriff, was able to come up with that well-known factoid and help the sheriff's son that he had previously rashly tried and judged guilty in his newspaper.
The deduction of the telegrapher's guilt happens totally in private and without spreading the news, yet when they immediately go to the telegraph office to look for the telegrapher, he is already gone, deserting his post for no apparent reason, and when they go to his house he is gone from there also, and when they go to his sister's house looking for him, without even telling her why they are looking for him, after she tells them where he went she begs them not to kill him, but nothing is said that would make her think that they wished him any harm, as they are only looking for him. Nobody tells the telegrapher they know he is guilty, he stays in town through the whole trial, then all of a sudden he just up and takes off and even his sister now knows they want to kill him?
Once the hunt for the telegrapher begins, the sheriff, who is such an honest and honorable and upstanding, law-abiding lawman that he was willing to hang his own son to tell what he believed to be the truth, becomes an enraged man looking to kill the telegrapher, wildly throwing a shot into the telegrapher's home upon arrival there without first trying to find him in the home and arrest him. He even shoots the gun out of the hand of his own deputy and then knocks him out to prevent the deputy from stopping him from killing the telegrapher. Quite a change from the "Iron Sheriff' so bent on upholding the law, suddenly wanting to kill the telegrapher when he had not even done any physical harm to his son. Sure, the telegrapher would have allowed the sheriff's son to hang, but at this point they had already figured out that the telegrapher was guilty of the killing, the sheriff's son would not have hanged, and all they needed to do was bring the telegrapher in for a new trial.