Ep.#   Air Date     Grade    Ep. Name
1st Season

  1- 1             10 Jan 67   Beachhead 
  1- 2             17 Jan 67   The Experiment 
  1- 3             24 Jan 67   The Mutation 
  1- 4             31 Jan 67   The Leeches 
  5     7 Feb 67     A-        Genesis 
  1- 6             14 Feb 67   Vikor 
  1- 7             21 Feb 67   Nightmare 
  1- 8             28 Feb 67   Doomsday Minus One 
  1- 9              7 Mar 67   Quantity: Unknown 
  1-10             14 Mar 67   The Innocent 
  1-11             21 Mar 67   The Ivy Curtain 
  1-12             28 Mar 67   The Betrayed 
  1-13              4 Apr 67   Storm 
  1-14             11 Apr 67   Panic 
  15      18 Apr 67     B+     Moonshot 
  1-16              2 May 67   Wall of Crystal 
  1-17              9 May 67   The Condemned 
2nd Season  

  2- 1              5 Sep 67   Condition: Red 
  2- 2             12 Sep 67   The Saucer 
  2- 3             19 Sep 67   The Watchers 
  2- 4             26 Sep 67   Valley of the Shadow 
  2- 5              3 Oct 67   The Enemy 
  2- 6             10 Oct 67   The Trial 
  2- 7             17 Oct 67   The Spores 
  2- 8             24 Oct 67   Dark Outpost 
  2- 9             31 Oct 67   The Summit Meeting (1) 
  2-10              7 Nov 67   The Summit Meeting (2) 
  2-11             14 Nov 67   The Prophet 
  2-12             21 Nov 67   Labyrinth 
  2-13             28 Nov 67   The Captive 
  2-14              5 Dec 67   The Believers 
  2-15             12 Dec 67   The Ransom 
  2-16             26 Dec 67   Task Force 
  17    2 Jan 68      B+    The Possessed 
  18    9 Jan 68      A-    Counterattack 
  2-19             16 Jan 68   The Pit 
  2-20             30 Jan 68   The Organization 
  2-21              6 Feb 68   The Peacemakers 
  2-22             20 Feb 68   The Vise 
  2-23             27 Feb 68   The Miracle 
  2-24              5 Mar 68   The Life Seekers 
  2-25             19 Mar 68   The Pursued 
  2-26             26 Mar 68   Inquisition