Episode Title: "THIS SIDE OF PARADISE"
Production Number: 25
Original Air Date: 03-02-67
Stardates: 3417.3, 3417.5, 3417.7
The U.S.S. Enterprise arrives at Omicron Ceti Three, the site of an Earth agricultural colony that is being bombarded by deadly bertold rays. Captain Kirk leads a landing party to the planet, expecting to find the colonists dead, but they find all the colonists perfectly healthy, including the colony's leader, Elias Sandoval, and an old acquaintance of Spock -- Leila Kalomi, the colony's botanist, who met the Vulcanian science officer six years ago on Earth.
There is no animal life on the planet, and the Enterprise is ordered by Starfleet Command to evacuate all the colonists to Starbase 27, but the colonists claim they are healthy and content, and they refuse to leave. Members of the landing party are exposed to spores from an alien flower, and they beam up dozens of the flowers to the Enterprise, where they expose the rest of the crew to the spores, causing them to lose interest in their duties, and the entire crew except for Captain Kirk beams down to the planet.
Kirk learns that strong emotions counteract the spores' effect on people, and Commander Spock helps him create a subsonic transmission that agitates everyone on the planet, breaking the influence of the alien spores on the crew and the colonists.
Factoid: The spores drifted through space until they landed on Omicron Ceti Three. They thrive on bertold rays, and give a person they infect complete health and peace of mind.
Factoid: Spock's mother was a teacher, and his father was an ambassador.
Factoid: Mr. Spock has another name, but it cannot be pronounced.
Dr. McCoy: "What do you mean, what sort of work? I'm a doctor. ... You'd better make me a mechanic. Then I can treat little tin gods like you."
Guest Characters: Lt. DeSalle, Lt. Kelowitz, Lt. Leslie
KEY: [brackets]=illusions *star=first appearance