Andromeda (2000)

S3E8 For Whom the Bell Tolls

Following a daring rescue during a fierce storm, a strange maggot is brought aboard the Andromeda. This creature begins to munch through the ship’s systems, inadvertently activating an old hologram of a former crew member. This individual had locked himself away in a concealed section of the ship before the event horizon and managed to survive. Convinced that Dylan has turned against the Commonwealth, the holographic avatar and an android of the crew member seize control of the ship, determined to hold Dylan accountable for his supposed betrayal.