| Welcome to Dreamland | | | |
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| The Hot Zone | | | — |
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| The Search | | — | — |
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| They Get Bigger | | — | — |
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| The Last Stand | — | — | — |
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| One of Them | — | — | — |
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| Internal Changes | — | — | — |
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| Life or Death | — | — | — |
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| Dr. Cray | — | — | — |
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| Hatching Parasites | — | — | — |
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| Project Blue Book | — | — | — |
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| Lies of the Past | — | — | — |
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| Buried Secrets | — | — | — |
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| Now Boarding | | | |
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| The Grays | | — | — |
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| Descent | | | |
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| The Ascension | | | — |
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| The Last Exit | | | — |
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