The series' strength of getting primo guest stars is evident here. The one-note premise itself is none to believable, but Begley and Roman manage to salvage much of the material with convincing turns. Roman returns home from prison after murdering her son's father. Why prison released the obviously wacko woman remains unclear. Anyway, because of Tod's resemblance to the dead father, the addled Roman believes Tod is her son. Begley, the dead son's uncle, persuades Tod to act out the role at least for a while. But then things go badly wrong.
Several things to note here. This looks like the first episode without Maharis who quit the show after several seasons. In fact, the next episode introduces Glen Corbett as Linc, Tod's new road buddy. I may be wrong, but Milner as Tod looks a little distant, perhaps because of Maharis' abrupt exit. Second, that Begley-Milner scene fishing in the surf is a triumph of difficult staging and acting. Begley was certainly a powerful presence and he shows it here. Lastly, repeating in its entirety the lengthy scene where Roman attacks Tod appears unnecessary, and may be one of the few instances of the series padding an episode's runtime.
Overall, the entry's screenplay is highly contrived, made watchable by the fine guest stars and location staging.