34 user 7 critic

Turnabout Intruder 

1:20 | Trailer
Captain Kirk's insane ex-lover Dr. Janice Lester forcibly switches bodies with him in order to take command of the Enterprise.


Herb Wallerstein


Gene Roddenberry (created by), Arthur H. Singer (teleplay by) | 2 more credits »





Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
DeForest Kelley ... Dr. McCoy
Sandra Smith Sandra Smith ... Janice Lester
Harry Landers ... Dr. Coleman
James Doohan ... Scott
George Takei ... Sulu
Walter Koenig ... Chekov
Majel Barrett ... Nurse Chapel
Barbara Baldavin Barbara Baldavin ... Communications Officer
David L. Ross ... Lt. Galoway
John Boyer John Boyer ... Guard


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

Plot Summary | Add Synopsis


TV-PG | See all certifications »


Official Sites:

Official site





Release Date:

3 June 1969 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:




Aspect Ratio:

See full technical specs »

Did You Know?


This episode was originally scheduled for broadcast on March 28, 1969. Special network coverage of the death of Dwight D. Eisenhower pre-empted it, and it didn't air until June 3. See more »


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


Mr. Spock: Sir, there is only one issue here: is the story of life-entity transfer believable? This crew has been to many places in the galaxy. They've been witness to many strange events. They are trained to know that what seems to be impossible often IS possible given the scientific analysis of the phenomenon.
See more »

Alternate Versions

Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more »


References Battleship Potemkin (1925) See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Kirk's Insane Ex-Lover & Final Episode of S.T. TOS
14 January 2017 | by Rainey-DawnSee all my reviews

Season 3, episode 24. The Enterprise receives a distress call from planet Camus II where there are archaeological expedition is taking place. The landing party finds 3 people alive, 2 who are Dr. Janice Lester and Dr. Arthur Coleman. Janice and Kirk were once lovers during their Academy days. Janice did not receive a starship command and she blames it on the fact that she's a woman - that caused Kirk and Janice to separate. The medical scans show the survivors were exposed to radiation poisoning. Kirk and Janice are left alone for a bit to talk. Kirk learns that Janice's self hate has grown and is at the point of madness. Using an alien device, Janice traps Kirk's mind and switches bodies with him. Kirk is now in Janice and Janice is now in Kirk. The Janice-in-Kirk orders the landing party to beam aboard the Enterprise. Dr. Coleman is Janice's partner in crime. Now Kirk and crew must figure out what happened and how to get Kirk back to himself and what to do with Janice & Dr. Coleman.

A very interesting concept - to switch bodies with the opposite sex (or anyone), to get them to understand what the other has to endure - what the other's life is really like. But Janice's way, ideas and motives, is not the logical and sane way to conduct this experiment.

The heat, tension, really builds as time goes on in this final episode of Star Trek TOS. i find the lower rating on this one illogical.


5 of 10 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 34 user reviews »

Contribute to This Page

Free Movies and TV Shows You Can Watch Now

On IMDb TV, you can catch Hollywood hits and popular TV series at no cost. Select any poster below to play the movie, totally free!

Browse free movies and TV series

Stream Trending TV Series With Prime Video

Explore popular and recently added TV series available to stream now with Prime Video.

Start your free trial

Recently Viewed