All our knowledge is given us by the Krotons. JAMIE: Exhaust? The door opens and the Doctor and Zoe exit.)
Plan: A: Jamie; Q: Who is held prisoner by the Krotons? A: their mental energy; Q: Why do the Krotons want to recapture the Doctor and Zoe? Summary: Jamie is held prisoner by the Krotons who intend to recapture the Doctor and Zoe for their mental energy.