The half-hour program is loosely based on the 1950 Warner Bros. film of the same name, starring Randolph Scott. Colt .45 was part of the William T. Orr-produced array of westerns which Warner produced for ABC in the late 1950s and early 1960s.
Season 1
1. 1-1 18 Oct 57 Judgement Day (The Peacemaker)
2. 1-2 25 Oct 57 A Time to Die
3. 1-3 01 Nov 57 The Three Thousand Dollar Bullet
4. 1-4 08 Nov 57 Gallows at Granite Gap
5. 1-5 15 Nov 57 Small Man
6. 1-6 22 Nov 57 Final Payment
7. 1-7 29 Nov 57 One Good Turn
8. 1-8 06 Dec 57 Last Chance
9. 1-9 13 Dec 57 Young Gun
10. 1-10 20 Dec 57 Rebellion
11. 1-11 27 Dec 57 The Gypsies
12. 1-12 03 Jan 58 Sign in the Sand
13. 1-13 10 Jan 58 The Mirage
14. 1-14 17 Jan 58 Blood Money
15. 1-15 24 Jan 58 Dead Reckoning
16. 1-16 31 Jan 58 Decoy
17. 1-17 07 Feb 58 Rare Specimen
18. 1-18 14 Feb 58 Mantrap
19. 1-19 21 Feb 58 Ghost Town
20. 1-20 28 Feb 58 Golden Gun
21. 1-21 07 Mar 58 Circle of Fear
22. 1-22 14 Mar 58 Split Second
23. 1-23 21 Mar 58 Point of Honor
24. 1-24 28 Mar 58 The Deserters
25. 1-25 04 Apr 58 The Manbuster
26. 1-26 11 Apr 58 Long Odds
Season 2
27. 2-1 05 Apr 59 The Escape
28. 2-2 12 Apr 59 Dead Aim
29. 2-3 19 Apr 59 The Magic Box
30. 2-4 26 Apr 59 The Confession
31. 2-5 03 May 59 The Man Who Loved Lincoln
32. 2-6 10 May 59 The Sanctuary
33. 2-7 17 May 59 The Saga of Sam Bass
34. 2-8 24 May 59 Amnesty
35. 2-9 31 May 59 The Pirate
36. 2-10 07 Jun 59 Law West of the Pecos
37. 2-11 14 Jun 59 Don't Tell Joe
38. 2-12 21 Jun 59 Return to El Paso
39. 2-13 28 Jun 59 Night of Decision
Season 3
40. 3-1 04 Oct 59 Queen of Dixie
41. 3-2 11 Oct 59 The Reckoning
42. 3-3 18 Oct 59 The Devil's Godson
43. 3-4 25 Oct 59 The Rival Gun
44. 3-5 01 Nov 59 The Hothead
45. 3-6 08 Nov 59 A Legend of Buffalo Bill
46. 3-7 15 Nov 59 Yellow Terror
47. 3-8 22 Nov 59 Tar and Feathers
48. 3-9 06 Dec 59 Alias Mr. Howard
49. 3-10 13 Dec 59 Calamity
50. 3-11 10 Jan 60 Under False Pretenses
51. 3-12 31 Jan 60 Impasse
52. 3-13 14 Feb 60 Arizona Anderson
53. 3-14 28 Feb 60 The Cause
54. 3-15 13 Mar 60 Phantom Trail
55. 3-16 27 Mar 60 Breakthrough
56. 3-17 05 Apr 60 Chain of Command
57. 3-18 12 Apr 60 Alibi
58. 3-19 19 Apr 60 Absent Without Leave
59. 3-20 26 Apr 60 Strange Encounter
60. 3-21 03 May 60 Trial by Rope
61. 3-22 10 May 60 The Gandy Dancers
62. 3-23 17 May 60 Martial Law
63. 3-24 24 May 60 Attack
64. 3-25 31 May 60 Bounty List
65. 3-26 07 Jun 60 Appointment in Agoura
66. 3-27 14 Jun 60 Showdown at Goldtown
67. 3-28 21 Jun 60 The Trespasser
