Jamie's girlfriend, Neta Thatcher, witnesses a drifter named Griff Bannon rob and kill a man at a roadside camp. Bannon - who assumes his victim's identity and inherits his fortune - is aware that Neta has witnessed the crime and begins stalking her. Neta is terrified to tell anyone about the crime she witnessed, but has even more problems on her hands: Her tough love father, who refuses to allow her to socialize with the Cartwrights. Meanwhile, Bannon takes a job at the Ponderosa using his victim's identity, and he and Jamie become friends. However, Bannon's cover is quickly blown when Neta fingers him as the killer. Just when Bannon has Jamie and Neta trapped, an unlikely hero saves their lives.