The Enemy Within

Name: The Enemy Within
Genre: Drama, Action & Adventure, Fantasy, Science Fiction
Released: October 6, 1966
Cast: William Shatner, Leonard Nimoy

Star Trek: Season 1: Episode 5

USER SCORE

No score yet

tbd

VOTE NOW

0 1 2 3 4 5 6 7 8 9 10

tbd	Your Score
tbd	User Score No score yet

Would you like to write a review?

There is a 75 character minimum for reviews. If your review contains spoilers, please check the Spoiler box. Please do not use ALL CAPS. There is no linking or other HTML allowed. Your review may be edited for content. 0/5000

Check box if your review contains spoilers

Play Sound

Please enter your birth date to watch this video:

You are not allowed to view this material at this time.

Star Trek: That Which Survives

Episode Details & Credits

NBC | Air Date: October 6, 1966

Starring: William Shatner, Leonard Nimoy

Summary: A transporter malfunction causes Captain Kirk to split into his "good" and "evil" selves, and a landing party will freeze to death if the crew is unable to find a way to merge the two Kirks back together.

Creator: Gene Roddenberry

Genre(s): Drama, Action & Adventure, Fantasy, Science Fiction

Season 1 Episodes

tbd
S1:E29. Operation -- Annihilate!
Air Date: April 13, 1967
tbd
S1:E28. The City on the Edge of Forever
Air Date: April 6, 1967
tbd
S1:E27. The Alternative Factor
Air Date: March 30, 1967

See all Seasons and Episodes

Episode User Score

tbd

Positive:

Mixed:

Negative:

No reviews yet.

More From Metacritic

Ranked: The Best/Worst Movies Based on TV Shows

The A-Team is only the latest TV show to make the jump to the big screen...

Save Our Show!: A History of TV Fan Campaigns

Earlier this week, we told you which TV shows were in danger in...

To Boldly Play: The Best and Worst Star Trek Videogames

The new Star Trek Online is only the latest in a storied line of Star...

What to Watch Right Now on Paramount+

Find a list of the best recent and upcoming film and TV titles added to...

Current TV Shows

By MetascoreBy User Score

1 92 The Pitt: Season 2

2 90 The Celebrity Traitors UK: Season 1

3 87 Hacks: Season 5

4 87 Industry: Season 4

5 87 Rivals

6 87 Genndy Tartakovsky's Primal:...

7 85 The Beatles Anthology

8 85 The Traitors [UK]: Season 4

9 85 Bait: Season 1

10 84 Mel Brooks: The 99 Year Old Man!

11 83 Lord of the Flies

12 83 Riot Women: Season 1

13 83 For All Mankind: Season 5

14 81 The Muppet Show (2026)

15 80 Outlander (2014): Season 8

16 80 The Other Bennet Sister: Season 1

17 80 The Comeback: Season 3

18 80 One Piece (2023): Season 2

19 80 Dark Winds: Season 4

20 79 How to Get to Heaven From...

SEE ALL

Seasons & Episodes

tbd

Series Overview
Season 4

tbd
- Season 4 Overview
  Air Date: September 8, 1966
Season 3

tbd
- Season 3 Overview
  Air Date: September 20, 1968
Season 2

tbd
- Season 2 Overview
  Air Date: September 15, 1967
Season 1

tbd
- Season 1 Overview
  Air Date: September 8, 1966
- tbd
  S1:E29. Operation -- Annihilate!
  Air Date: April 13, 1967
- tbd
  S1:E28. The City on the Edge of Forever
  Air Date: April 6, 1967
- tbd
  S1:E27. The Alternative Factor
  Air Date: March 30, 1967
- tbd
  S1:E26. Errand of Mercy
  Air Date: March 23, 1967
- tbd
  S1:E25. The Devil in the Dark
  Air Date: March 9, 1967
- tbd
  S1:E24. This Side of Paradise
  Air Date: March 2, 1967
- tbd
  S1:E23. A Taste of Armageddon
  Air Date: February 23, 1967
- tbd
  S1:E22. Space Seed
  Air Date: February 16, 1967
- tbd
  S1:E21. The Return of the Archons
  Air Date: February 9, 1967
- tbd
  S1:E20. Court Martial
  Air Date: February 2, 1967
- tbd
  S1:E19. Tomorrow is Yesterday
  Air Date: January 26, 1967
- tbd
  S1:E18. Arena
  Air Date: January 19, 1967
- tbd
  S1:E17. The Squire of Gothos
  Air Date: January 12, 1967
- tbd
  S1:E16. The Galileo Seven
  Air Date: January 5, 1967
- tbd
  S1:E15. Shore Leave
  Air Date: December 29, 1966
- tbd
  S1:E14. Balance of Terror
  Air Date: December 15, 1966
- tbd
  S1:E13. The Conscience of the King
  Air Date: December 8, 1966
- tbd
  S1:E12. The Menagerie - Part II
  Air Date: November 24, 1966
- tbd
  S1:E11. The Menagerie - Part I
  Air Date: November 17, 1966
- tbd
  S1:E10. The Corbomite Maneuver
  Air Date: November 10, 1966
- tbd
  S1:E9. Dagger of the Mind
  Air Date: November 3, 1966
- tbd
  S1:E8. Miri
  Air Date: October 27, 1966
- tbd
  S1:E7. What Are Little Girls Made Of?
  Air Date: October 20, 1966
- tbd
  S1:E6. Mudd's Women
  Air Date: October 13, 1966
- tbd
  S1:E5. The Enemy Within
  Air Date: October 6, 1966
- tbd
  S1:E4. The Naked Time
  Air Date: September 29, 1966
- tbd
  S1:E3. Where No Man Has Gone Before
  Air Date: September 22, 1966
- tbd
  S1:E2. Charlie X
  Air Date: September 15, 1966
- tbd
  S1:E1. The Man Trap
  Air Date: September 8, 1966
- tbd
  S1:E0. The Cage
  Air Date: November 30, -0001