Searching Beta III for survivors of the USS Archon, Kirk and crew discover a society whose citizens appear to be staid and respectable, until the advent of "Red Hour" allows them to run amok. Kirk and Spock avoid being "absorbed" into the "body" long enough to discover the bizarre source of the planet's unity.
Perry uncovers a scheme to defraud an insurance company while solving the murder of a ship's captain; guest Sean McClory.
Murder in a booby-trapped elevator leads Perry Mason to set a spectacular electrical trap in court.
An artist fakes suicide to boost the value of his work, but the plot backfires when he is found murdered.
Willard Nesbitt stages his own death so his wife can collect on a large insurance policy. Then he learns his business partner means to cheat the wife out of some mining property royalties. Nesbitt's "return to life" is short lived, and Perry Mason defends the wife against the murder charge.