When Barney's over-zealousness causes him to become a laughing stock, Andy tactfully arranges for Barney to regain his status.
A trial run as Sheriff of Mayberry convinces Barney that he is not quite ready to take over a similar job in a neighboring town.
Ron Howard's real-life father and younger brother appear, as Mayberry gets involved with a gold shipment en route to Fort Knox.
Barney tickets Gomer for a U-turn and is then detained in a citizen's arrest by Gomer for the same thing.
Through a series of coincidences, Barney captures a dangerous criminal--twice.