A Plaque for Mayberry
Mayor Pike (Dick Elliott) and the townspeople are shocked to discover that the last living descendant of Revolutionary War hero Nathan Tibbs is Mayberry's town drunk, Otis Campbell.
When an explosives expert is hospitalized before he can lead authorities to his employer, the Rangers conveniently find a double for the suspect -- low-level culprit Charlie Brooks.
Muley visits with a pack of hound dogs. Hoss & Muley train the dogs, but when their real owner shows up, she is furious that her bird dogs have been ruined. Muley is accused of stealing her dogs, when he really purchased them.
Joe's ex Hallie thinks Joe killed her husband so they could be together. Joe denies this but Sannon's husbands' brother also believes this, comes to town, & causes trouble for Joe. Things get worse when Hallie is found dead too.
A boy with telekinetic power flees from a research facility after its computer warns him that the scientist leading a study of the boy might fatally tax his brainpower.
After telling Doug that she'll be working all weekend, Carrie gets caught in the lie when he discovers that she already has an appointment. Guest Star: Huey Lewis