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- 1BeachheadJanuary 10, 1967 · 7.3
- 2The ExperimentJanuary 17, 1967 · 8.0
- 3The MutationJanuary 24, 1967 · 7.7
- 4The LeechesJanuary 31, 1967 · 7.7
- 5GenesisFebruary 7, 1967 · 7.5
- 6VikorFebruary 14, 1967 · 7.5
- 7NightmareFebruary 21, 1967 · 8.0
- 8Doomsday Minus OneFebruary 28, 1967 · 8.0
- 9Quantity UnknownMarch 7, 1967 · 8.0
- 10The InnocentMarch 14, 1967 · 7.5
- 11The Ivy CurtainMarch 21, 1967 · 8.0
- 12The BetrayedMarch 28, 1967 · 8.0
- 13StormApril 4, 1967 · 8.0
- 14PanicApril 11, 1967 · 7.5
- 15MoonshotApril 18, 1967 · 7.5
- 16Wall of CrystalMay 2, 1967 · 8.0
- 17The CondemnedMay 9, 1967 · 8.0