Star Trek (1966–1969)
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Turnabout Intruder 

Captain Kirk's insane ex-lover Dr. Janice Lester forcibly switches bodies with him in order to take command of the Enterprise.



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Episode complete credited cast:
Sandra Smith ...
Harry Landers ...
Barbara Baldavin ...
John Boyer ...


In answering a medical emergency at an archaeological expedition, Kirk confronts the deep hatred of an old love, Janice Lester, who supposedly lies severely ill from celebium radiation. In payment for jilting her back at Starfleet Academy, Dr. Lester arranges for an alien machine to swap her consciousness with that of the captain and takes command of the Enterprise. Once aboard, Kirk (in Lester's body) tries to convince Spock that he is trapped in her body. As a result, Janice (in Kirk's body) conducts a court-marshal with the intent of executing Spock and Kirk (in Janice's body), and later McCoy and Scott, to keep her secret. The crew realize something is seriously wrong with their captain and, not wishing to incur an illegal death-penalty themselves, begin a passive resistance. Written by JW Kearse

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Release Date:

3 June 1969 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


After two years on the series, Roger Holloway finally gets to speak dialogue, all of two words. His character's name (Lemli) was the same as William Shatner's license plate at the time, a mixture of his daughters' (Leslie, Melanie, Lisabeth) names. See more »


Lt. Galloway (David L. Ross) appears in this episode, despite being killed a year earlier in Star Trek: The Omega Glory. See more »


Dr. Janice Lester: [in Kirk's body] Mr. Spock, if you'd concentrate on the areas for which you are responsible, Starfleet Command wouldn've been informed already.
Mr. Spock: Since the captain usually deals directly with Starfleet in these matters, I assumed that my suggestions might be deemed interference.
See more »


Spoofed in Sex Trek: Charly XXX (2007) See more »

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User Reviews

The Star Fleet Glass Ceiling
13 September 2014 | by (Buffalo, New York) – See all my reviews

Back when this show was first aired in 1969 it seemed a lot more plausible that a woman would still after some 5 centuries would still be held down by a glass ceiling. But now that we've elected a black president and seem poised to elect a woman president in the next election this particular episode loses a bit of its verisimilitude.

Nevertheless this particular Star Trek story gives William Shatner one of his opportunities and since this was the last episode of Star Trek prime a great one to say adieu to that first run audience. Ditto for Sandra Scott who plays both the envious Dr. Janice Lester and Captain James T. Kirk trapped in Lester's body.

The Enterprise arrives on a rescue mission on a distant planet to save the members of an expedition taken with radiation exposure. When she gets William Shatner alone she paralyzes him and tricks him into a machine where she joins him and in a Freaky Friday moment they exchange consciousness. Now Dr. Lester has fulfilled her fondest dreams. She who washed out of Star Fleet Academy is now captain of a starship. But in William Shatner's body she soon displays why she just didn't belong in Star Fleet let alone in command of a ship.

The episode does raise some discrimination issues and oddly enough the one woman regular in Star Trek wasn't in this final show. Perhaps Gene Roddenberry didn't want Nichelle Nichols in it for some personal reason. I think the unflappable Lieutenant Uhura at her communication station doing her job while Lester as Kirk unravels would have been a great contrast.

Though real future events have dated the episode I think it still has a lot to say about women's equality.

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