0. The Cage (never broadcast on NBC, later used in 2 parter #15/16)
1. Where No Man Has Gone Before
2. The Corbomite Maneuver
3. Mudd's Women
4. The Enemy Within
5. The Man Trap
6. The Naked Time
7. Charlie X
8. Balance of Terror
9. What Are Little Girls Made Of?
10. Dagger of the Mind
11. Miri
12. The Conscience of the King
13. The Galileo Seven
14. Court-Martial
15. Menagerie, Part I (only 2 part episode)
16. Menagerie, Part II
17. Shore Leave (sequel is in Animated series, same author)
18. The Squire of Gothos
19. Arena
20. The Alternative Factor
21. Tomorrow is Yesterday
22. The Return of the Archons
23. A Taste of Armageddon
24. Space Seed (sequel in movie series - "ST2: The Wrath of Khan")
25. This Side of Paradise
26. The Devil in the Dark (rewitten from ep of Roddenberry's western series "Have Gun Will Travel")
27. Errand of Mercy
28. The City on the Edge of Forever
29. Operation - Annihilate!
SEASON 2
30. Catspaw
31. Metamorphosis
32. Friday's Child
33. Who Mourns for Adonis?
34. Amok Time
35. The Doomsday Machine
36. Wolf in the Fold (a knife murder, written by author of movie "Pycho")
37. The Changeling (later adapted as 1st ST movie)
38. The Apple
39. Mirror, Mirror
40. The Deadly Years
41. I, Mudd (sequel to Mudd's Women)
42. The Trouble with Tribbles (sequel is in Animated series, by same author)
43. Bread and Circuses
44. Journey to Babel
45. A Private Little War
46. The Gamesters of Triskelion
47. Obsession
48. The Immunity Syndrome
49. A Piece of the Action
50. By Any Other Name
51. Return to Tomorrow
52. Patterns of Force
53. The Ultimate Computer
54. The Omega Glory
55. Assignment: Earth
SEASON 3
56. Spectre of the Gun
57. Elaan of Troyius (based on a story by Shakespeare)
58. The Paradise Syndrome
59. The Enterprise Incident
60. And the Children Shall Lead
61. Spock's Brain
62. Is There in Truth No Beauty?
63. The Empath
64. The Tholian Web
65. For the World is Hollow and I Have Touched the Sky
66. Day of the Dove
67. Plato's Stepchildren (guest star Michael Dunn from Wild Wild West tv series)
68. Wink of an Eye (rewritten from 1965 Gene L. Coon ep of Wild Wild West)
69. That Which Survives
70. Let That be Your Last Battlefield (no relation to Battlefield Earth)
71. Whom Gods Destroy
72. The Mark of Gideon
73. The Lights of Zetar (aliens turn a crew member into a human puppet, cowritten by Shari Lewis & her husband)
74. The Cloud Minders
75. The Way to Eden
76. Requiem for Methuselah (based on a story by Shakespeare, also used for movie Forbidden Planet)
77. The Savage Curtain
78. All Our Yesterdays
79. Turnabout Intruder (suggested by the 1940 movie "Turnabout," which became a brief tv series in the 1970s)
Star Trek Home Page
Star Trek Episodes list (click ep title for description) on Sci-fi Channel's website
