Andromeda

The Others (4x14)

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The Andromeda encounter 2 ships with depleted engines and weapons. They come from a planet, where the two sides have been fighting for as long as anyone can remember. One side is suffering from a disease, they claim the other side is using biological weapons, but the other side says they didn't do it. When Dylan becomes infected, the crew must figure out the source of the virus to save the captain.