2.11 Friday's Child

Sent to negotiate a mining treaty on planet Capella IV, Kirk discovers a Klingon agent has infiltrated the culture and become embroiled in a deadly conflict. Kirk and Spock must reveal the Klingon's involvement before it's too late and the planet plunges into permanent civil war.

Friday's Child
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TOS Season 2, Episode 11

WRITTEN BY
D.C. Fontana
DIRECTED BY
Joseph Pevney

First Aired Dec 1, 1967
Stardate 3497.2