The Ark in Space - Part Two
The creature that lurches forth from the closet is dead. The Doctor and Harry turn back to trying to revive Sarah. Vira, one the of sleepers, wakes up. She demands to know what the Doctor and his companions are doing on the space station.
The Doctor and Harry try to explain. They ask about reviving Sarah. The power starts to fail. The Doctor rushes to the power room to see what can be done. There he finds a larva like creature inside the solar stack. He rushes back to find the others.
Noah, the leader of the station's crew is the next sleeper to wake up. He is very suspicious of the Doctor and his companions. He goes to check on a couple things. He finds the Doctor in the station's control room and shoots him with a stun blast from his pistol.
Vira helps the Doctor and Harry to revive Sarah. Noah goes to check out the solar stack. The creature that the Doctor saw breaks out of the solar stack and infects Noah by touching him.
Vira wakes up Libri, another of the sleepers. He freaks out when he looks at Noah. It isn't clear why at the moment but later Noah shoots Libri. The episode ends with Noah pulling his hand out of his pocket. It has turned green and no longer looks like a human appendage.