A salesman living from sale to sale, walks between towns and stumbles upon a dead body. He discovers the man was on his way to a marshal's job at Apache Wells and decides to take his job and what he was also wearing - the Deadman's Gun.
A pair of undertakers get their business wherever they can. Their payment is whatever they can get, even from each other. During an unusually slow period, their payment and their future comes unexpectedly in the form of the Dead Man's Gun.
Robert Cosgrove runs a failing boarding house with his wife. A rich boarder tells him we make our own luck. Taking his advice, he starts a new career by stealing his money and relieving him of the Deadman's Gun.
Harry McDonacle is part of a traveling group of performers going from town to town. Using a prop pistol which fires buckshot instead of bullets, he never misses his target. That is until he runs into the Dead Man's Gun.