The Federation clashes with the Klingon Empire over mining rights to Capella IV. A sudden coup between its warrior-minded inhabitants forces Kirk's party to flee with the now dead leader's pregnant wife.



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Episode complete credited cast:
Cal Bolder ...
Ben Gage ...
Kirk Raymond ...
Duur (as Kirk Raymone)
Bob Bralver ...
Grant (as Robert Bralver)


The Federation is in competition with the Klingons for an alliance with the inhabitants of Capella IV. The Capellans are a warrior tribe and there is dissension among them as to who to sign the mining rights treaty with. McCoy is familiar with their customs having once spent several months there. When a Capellan, who clearly favors the Klingons, stages a coup, Kirk, Spock and McCoy flee with the now dead leader's wife, who is about to give birth. Meanwhile, the Enterprise receives a distress call from a Federation vessel under attack and, with Scotty in command, leaves orbit. Written by garykmcd

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Release Date:

1 December 1967 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


For his first four appearances in the series, including this episode, Walter Koenig wore a The Monkees (1966)-style wig, which he absolutely detested. In one interview, he made joking and uncomplimentary references to that wig. See more »


When Kirk and Spock use their communicators to create a landslide of rocks, we can see a small explosion directly before the landslide starts. See more »


McCoy: The last thing I'll want around is a ham-handed ship's captain.
See more »


Featured in William Shatner's Star Trek Memories (1995) See more »

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User Reviews

Another Anthropological Fiasco
28 September 2007 | by (Vulcan) – See all my reviews

Interesting primarily for its guest appearances, Friday's Child is one of Joe Pevney and D. C. Fontana's more mediocre efforts. Among the guests is great musical and stage actress Julie Newmar, who is mainly known to TV audiences for having played Catwoman in the classic Batman TV show. Casting called for a number of very tall and beefy people, so many of the guest stars are over 6' and recognizable by sight if not by name.

The trinity (Kirk, Spock, McCoy + a soon-to-die redshirt) have beamed down to a planet inhabited by a very hierarchal, male-dominated culture whose rank system revolves around violence. Upon arrival, they find that a Klingon (only one?) has arrived before them. The Klingon has been propagandizing against the federation since his arrival, and has jeopardized the Enterprise's mission to obtain mineral rights. The redshirt makes matters worse by threatening the Klingon at first sight.

Although McCoy once lived on this planet and briefs the crew on some ethnographic details ahead of time, these preparations were not nearly enough, as the away team creates one blunder after another. Fontana did a nice job of thinking out the alien culture's intricacies, but unfortunately, the episode devolves into a somewhat unoriginal action adventure about mid-way through.

Cinematography and effects are very average for TOS, writing is OK, directing is well below Pevney's usual mark, and acting is fairly good. Look for a lot of amusing but hokey banter with Spock in this one, and a solid and interesting performance by Ms. Newmar.

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