The Seventh Man by Max Brand

If Sheriff Pete Glass had been the typical hard-riding, sure-shooting officer of the law as it is seen in the mountain-desert, his work would have died with his death, but Glass had a mind as active as his hands, and therefore, for at least a little while, his work went on after him. He had gathered fifteen practiced fighters who represented, it might be said, the brute body of the law, and when they, with most of Rickett at their heels, burst down the door of the Sheriff's office and found his body, they had only one thought, which was to swing into the saddle and ride on the trail of the killer, who was even now in a diminishing cloud of dust down the street. He was riding almost due east, and the cry went up: "He's streakin' it for the Morgan Hills. Git after him, boys! " So into the saddle they went with a rush, fifteen tried men on fifteen chosen horses, and went down the street with a roar of hoof-beats. That was the body and muscle of the sheriff's work going out to avenge him, but the mind of the law remained behind.

It was old Billy, the clerk. No one paid particular attention to Billy, and they never had. He was useless on a horse and ridiculous with a gun, and the only place where he seemed formidable was behind a typewriter. Now he sat looking, down into the dead face of Pete Glass, trying to grasp the meaning of it all. From the first he had been with Pete, from the first the invincibility of the little dusty man had been the chief article of Billy's creed, and now his dull eyes, bleared with thirty years of clerical labor, wandered around on the galaxy of dead men who looked down at him from the wall. He leaned over and took the hand of the sheriff as one would lean to help up a fallen man, but the fingers were already growing cold, and then Billy realized for the first time that this was death. Pete Glass had been; Pete Glass was not.