Season 4

1. The Secret

2. Reunion at Steepler's Hill

3. The Pipe

4. The Viking

5. The Net Draws Tight

6. Square Shootin'

7. The Best of Everything

8. The Sensation Club

9. No Rescue

10. Midnight Haul

11. The Long Trail

12. Mystery of Murder

13. Volturio Investigates

14. Spangal Island

15. Woman Expert

16. Day of Good News

17. The Dumbest Man in the Army

18. The Cool One

19. Man Out of the Rain

20. Underground

21. Murder In Paradise

22. The Last Pilot Schooner

23. The Schoolmarm

24. The Way to Freedom

25. Fast Break

26. Fedar

27. Visitor in the Night

28. Ride to the West

29. Log the Man Innocent

30. Tourists - Overnight

31. Mr. Ears

32. O'Brien

33. Who's the Blonde?

34. The Brute Next Door

35. The Unlighted Road

36. Too Many Nelsons

37. Sentence of Death

38. The Argonauts

39. Visa for X

40. O'Connor and the Blue-Eyed Felon

41. A Mule for Santa Fe

42. Splendid with Swords

43. The Ordeal of Dr. Sutton

44. Ambitious Cop

45. Meet Mr. Justice

46. Visibility Zero

47. The Direct Approach

48. Too Late to Run

49. On Leave

50. Jury of One

51. The Case for the State

52. Three Months to Remember

53. The Uninhibited Female

54. Wild Call

55. The Quitter