Feisty country farmer Rafe Hollister is determined to avoid getting a tetanus shot when county nurse Mary Simpson arrives in Mayberry to inoculate the citizenry.
Mark befriends singer-banjoist Lafayette Bly, a blind man with an acute sense of hearing—and a very strong grip.
A young genius, Albert Michaelson, vies for a scholarship. Adam assists Albert in the boy's experiments. Albert only needs the school teacher's approval to be granted a scholarship-which will be very difficult to get considering Albert was expelled from school.
A speculator in land is already unpopular in Dodge, but when he is acquitted of the murder of a man he killed, he finds himself "sent to Coventry": no one in town, not even Kitty, will buy, sell, or even speak to him.
A six-year-old girl rolls under her bed and vanishes into a fourth dimension. Her parents and a neighbor struggle to free her before the hole between the dimensions closes forever.
Having sold her home, Fred's antagonistic mother-in-law arrives at the Flintstone cave, and Fred tries to play cupid after meeting a rich Texan who is looking for an elderly wife. He invites the man home for dinner, but Wilma becomes suspicious of the would-be suitor.
Ozzie and Harriet become lonely when they don't hear from David and June.
When a long-time employee retires with little in the way of thanks, the man decides to rob the company and run off with his secret girlfriend. His wife, however, has other plans.
With the town jail full, Andy reluctantly decides to have the town drunk, Otis Campbell, incarcerated in Andy's own home. But when Aunt Bee takes charge as the "warden," Otis is soon howling to be locked up in the real jail!
Mark is shocked when he discovers that his father is a poker player.
Ben supports the appointment of Asa Moran as Virginia City's temporary sheriff, but Moran goes overboard with his authority, jailing Adam in the process and pistol-whipping a Ponderosa hand.
Oren was a rancher who liked his drink, gambling and women, even though he had a pretty wife at home. Matt is forced to kill him and when he breaks the news to her, all she can see is getting revenge for his death, and Matt is her target.
Fred and Barney encounter the penniless J. Montague Gypsum, who is threatening to jump from a bridge. Fred takes the man home and learns too late how responsible he is for the life he saved.
Old Ben, who is able to transform himself into anything, tries to help a crippled little girl.
March 3, 1932. It's the great train robbery, on the southbound express headed for Chicago. The Stryker brothers steal mail sacks containing 750 grand in payroll money. During the robbery, a baggage man and Lippy Carson (an associate of the Stryker brothers, who had worked as a mail clerk) are killed, and thrown from the speeding train. Since mail robbery is a federal offense, Eliot Ness and his Untouchables are called in.
Fraternity brother Wally confesses to Ricky that he can't afford a fancy dinner at a plush restaurant.
A group of young thieves hit on the idea of robbing a wealthy man by one of them volunteering to babysit. However, when robbing the premises, the man returns home, leading to murder and revenge.
Weaver's Department Store in Mayberry has some new competition -- in the form of Bert Miller, a traveling salesman who sets up shop in the town with a little help from Andy.
Mark learns that the prisoner Micah is escorting to the gallows is the man that saved his life three years previously.
In order to keep peace on the ranch, Hoss and Joe try to help ranch hand, Hank Meyers woo the the plain-looking schoolteacher, Abigail Jones. When their first plan backfires, they convince Adam (who doesn't want to get involved) to help and this makes things worse because Abigail believes it is Adam who is wooing her and Hank Meyers believes Adam wants to steal her away.