Gunsmoke S16E03 - Stark

Adam Bramley, an immature selfish young man, has escaped from prison. Lewis Stark is a bounty hunter who catches him, then blackmails him for money with Bramley's father, John, a rancher with a serious heart condition. Adam's strong-willed sister Glory, has the ranch hands beat up Stark, while John pays him off to leave. Adam finally has an epiphany just as his father is dying of a heart attack.