Airdate March 2, 1967
26 of 80 produced
24 of 80 aired
Click here to watch on CBS.com
Click here to watch on CBS.com
Introduction
The Enterprise is sent to recover the remains of what it believes to be a failed colony on a planet subject to an invariably fatal form of radiation. Instead, they find the colonists alive and well. They seem perfectly happy, too happy in fact. As the mysteries compound, it becomes clear that not all is as it seems on this colony, and the secret of the colony's impossible survival may threaten the Enterprise.
Spock whips out Kiri-Kin-Tha's First Law of Metaphysics in a ploy to get laid...
