• S 13: Ep 21 The Seeds of Doom, Part One
    1/31/76
  • S 13: Ep 4 Terror of the Zygons, Part Four
    9/20/75
  • S 13: Ep 3 Terror of the Zygons, Part Three
    9/13/75
  • S 13: Ep 2 Terror of the Zygons, Part Two
    9/6/75
  • S 13: Ep 1 Terror of the Zygons, Part One
    8/30/75