Kidnapers Harry (Claude Akins) and Rudy (Dick Paxton) summon Doc (Milburn Stone) to their shack to tend the wounds of their victim Hank Worth, the son of a wealthy rancher. When Hank dies, the outlaws are prepared to kill Doc, but he gives his word of honor not to reveal their whereabouts if they let him go (no, Doc isn't begging for his life; it is just that he's the only physician within 400 miles of Dodge). Ultimately, Doc's promise may put Marshal Matt Dillon (James Arness)--an old friend of Hank Worth's father--in mortal danger. This episode is based on the Gunsmoke radio broadcast of October 1, 1953. ~ Hal Erickson, Rovi