Andromeda

Decay of the Angel (5x4)

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Doyle is plagued by nightmares, and half remembered dreams of life on board the Andromeda. But she was never a member of the crew. One person notices her perceptions are off and realizes Doyle doesn't know who she really is and tries to get her to join with him and others of their own kind. Doyle will learn the truth of her origin, and why she feels at home on the Andromeda.