- Adventure
- Mystery

The Man Called X
111 episodes Aired 1944-1952
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1. Antarctic Expedition
   27mins Aired 1947-04-03
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2. One Way to Macassar
   29mins Aired 1950-10-20
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3. Acme Oil Refinery
   26mins Aired 1947-04-17
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4. Mr Messler and the Insurance Policy
   27mins Aired 1947-04-24
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5. Journey to Xenephon
   29mins Aired 1950-10-27
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6. Custom Cigarettes
   29mins Aired 1950-10-13
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7. The Stamp Story
   27mins Aired 1947-05-15
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8. Missing Deciphering Machine Plans
   29mins Aired 1950-11-25
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9. Dr Alvarez's Laboratory
   29mins Aired 1950-12-02
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10. Swindle to Honolulu
    27mins Aired 1947-06-05
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11. Red Messenger
    29mins Aired 1950-12-16
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12. The Silver Scarab
    27mins Aired 1947-06-19
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13. Five Ounces of Treason
    30mins Aired 1951-01-13
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14. Japan Underground
    29mins Aired 1951-01-20
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15. Orient Express
    29mins Aired 1951-01-27
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16. Pirates off the Coast of India
    29mins Aired 1951-02-03
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17. Mine Sabotage
    29mins Aired 1951-02-10
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18. North of Thirty Eight
    29mins Aired 1951-02-17
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19. A Tiny Bit of Microfilm
    29mins Aired 1951-02-24
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20. Dope Smuggling
    29mins Aired 1951-03-03
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21. Cargo Confidant
    29mins Aired 1951-03-10
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22. University of Leiden
    30mins Aired 1951-03-17
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23. Missing Witness
    29mins Aired 1951-03-24
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24. The Blue Unicorn
    29mins Aired 1951-03-31
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25. India
    29mins Aired 1951-04-07
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26. Treason at White Sands
    29mins Aired 1951-04-14
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27. Race Against Death
    29mins Aired 1951-04-21
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28. Terror Across the Nation
    29mins Aired 1951-04-28
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29. Monte Carlo
    29mins Aired 1951-05-04
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30. Knocked Off His Feet
    30mins Aired 1951-05-11
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31. Enough Intrigue to Fill a Book
    29mins Aired 1951-05-18
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32. A Man, a Girl and a Plot
    29mins Aired 1951-05-25
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33. Stalin Plus Seven
    30mins Aired 1951-06-01
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34. Grain Black Market in India
    29mins Aired 1951-06-08
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35. Amazon River
    29mins Aired 1951-06-15
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36. Vienna
    29mins Aired 1951-06-22
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37. Timber Country
    28mins Aired 1947-10-16
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38. Delta Concerto
    22mins Aired 1947-12-14
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39. No One Wins on Zero
    28mins Aired 1947-10-02
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40. Spirit of the Snows
    23mins Aired 1948-01-11
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41. The Throne Of Tayh-Ninh
    25mins Aired 1947-09-04
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42. Carbon Fourteen
    22mins Aired 1948-01-25
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43. Written in the Sand
    24mins Aired 1947-11-09
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44. Trip to Xenephon
    22mins Aired 1947-11-16
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45. Till Death Do Us Part
    27mins Aired 1947-08-07
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46. From a Starlit Hill
    23mins Aired 1947-12-21
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47. Report from the Arctic
    22mins Aired 1947-11-23
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48. Shipment Condemned
    22mins Aired 1947-12-07
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49. Ranee of Shalakar
    22mins Aired 1948-01-18
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50. Spot the Eight Ball
    22mins Aired 1948-01-04
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51. Rembrandt in Rio
    29mins Aired 1947-06-26
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52. All That Glitters
    28mins Aired 1947-10-09
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53. Ashes to Ashes
    25mins Aired 1947-11-02
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54. The Lost Ones
    27mins Aired 1947-08-21
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55. Assignment -- Naples
    23mins Aired 1947-12-28
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56. Destination Manila
    29mins Aired 1947-07-24
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57. Checkmate in Tahiti
    25mins Aired 1947-11-30
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58. One Way to Macassar
    22mins Aired 1948-02-01
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59. Storm over the Alps
    22mins Aired 1948-02-29
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60. One Sailor Died Twice
    22mins Aired 1948-03-21
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61. From a Starlit Hill
    29mins Aired 1950-12-23
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62. Rhythm of Death
    29mins Aired 1950-12-30
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63. Rendezvous with Death
    29mins Aired 1950-11-11
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64. The Pickled Chemist
    27mins Aired 1948-03-14
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65. Guns on the Niger
    22mins Aired 1948-02-15
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66. Mr X Goes to Syria
    29mins Aired 1950-12-09
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67. A Ruby for Pearl
    22mins Aired 1948-03-28
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68. Operation Fifty
    30mins Aired 1951-01-06
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69. Professor Czorny Has Disappeared
    29mins Aired 1950-11-03
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70. A Tiger for the Lady
    22mins Aired 1948-02-08
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71. The Girl Who Couldn't Remember
    29mins Aired 1948-08-15
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72. Burma Peninsula
    30mins Aired 1948-08-22
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73. Contraband
    29mins Aired 1948-08-29
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74. Mekong River Dam
    30mins Aired 1948-08-08
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75. Kangaroo Bay, Australia
    30mins Aired 1948-09-12
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76. Worth Her Weight In Gold
    30mins Aired 1948-09-05
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77. The Laughing Lady
    30mins Aired 1948-09-26
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78. Madagascar Physicist
    30mins Aired 1948-09-19
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79. Operation Silver
    22mins Aired 1948-02-22
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80. Warm Welcome, Sudden Death
    29mins Aired 1950-11-18
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81. Passport to Danger
    22mins Aired 1948-03-07
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82. Alaska Weather Station
    25mins Aired 1952-03-04
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83. Ha'Penny Stamp
    24mins Aired 1952-02-19
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84. Casablanca
    29mins Aired 1952-01-22
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85. Operation Cabal
    25mins Aired 1952-05-27
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86. Rescue From Czech Uranium Mine
    24mins Aired 1952-05-13
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87. Italy
    24mins Aired 1952-02-12
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88. The Desert of Death
    25mins Aired 1952-05-06
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89. Icy Slopes of the Matterhorn
    30mins Aired 1952-01-15
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90. Silcilian Farmland
    25mins Aired 1952-04-15
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91. Flying Trip to Nowhere
    30mins Aired 1952-01-08
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92. Death and Treasury March Hand in Hand
    29mins Aired 1951-06-29
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93. The Casbah
    30mins Aired 1951-07-06
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94. Foot and Mouth
    25mins Aired 1952-04-22
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95. Flying Trip to Indonesia
    29mins Aired 1951-07-13
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96. Orinoco River Basin
    24mins Aired 1952-02-26
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97. Cholera Epidemic
    25mins Aired 1952-04-29
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98. Plan To Kill NATO Pact
    24mins Aired 1952-03-11
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99. Ancient Byzantine Bible
    24mins Aired 1952-05-20
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100. Invitation to a Murder
     29mins Aired 1951-10-01
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101. Tanganyika
     24mins Aired 1952-03-18
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102. The Clicking Buddha
     25mins Aired 1952-02-05
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103. Dirty Racket
     24mins Aired 1952-01-29
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104. Petroleum Sabotage In Lima
     29mins Aired 1952-01-01
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105. Murder, Music and a Blonde Madonna
     29mins Aired 1944-08-28
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106. India Quinine Contract
     30mins Aired 1944-09-30
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107. International Blackmail Racket
     30mins Aired 1944-10-14
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108. Stolen Diamonds
     29mins Aired 1944-11-25
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109. Into Berlin
     30mins Aired 1945-03-03
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110. Stolen Lavaliers In France
     29mins Aired 1946-07-23
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111. Turtle Island Vacation
     25mins Aired 1946-07-30
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The Man Called X is an espionage radio drama that follows the adventures of the suave and sophisticated Ken Thurston, an undercover international troubleshooter for a mysterious American governmental agency. Assisting him is the shady character Pegon Zeldschmidt, played by Leon Belasco. The series, known for its captivating stories featuring danger, intrigue, and romance in exotic settings, was directed by Jack Johnstone, with music credited to Johnny Green. The show's famous tagline was, "Wherever there is mystery, intrigue, romance, in all the strange and mysterious places of the world, there you will find The Man Called X".

The Man Called X first aired from July 10 to August 28, 1944, on CBS, before moving to the Blue Network for roughly six months, from September 9, 1944, to March 3, 1945. It then found its final home at NBC, where it was a summer filler for the Bob Hope Show in 1945 and 1946 before becoming a regular part of the NBC lineup from 1947 until the final radio broadcast on May 20, 1952. The show was sponsored by various companies, most notably Frigidaire and General Motors. The series was later adapted for television in the early 1950s, with Barry Sullivan starring, though it had a short run.

Performers: Herbert Marshall, Leon Belasco

Sources: archive.org, wikipedia.org, otrcat.com