JO: What about the two men on the fort? Sea Devils! TRENCHARD: (To the MASTER.) The DOCTOR and JO are not far behind.) comforting him.)
Plan: A: a Sea Devil; Q: Who traps the Doctor and Jo on the fort? A: the Master; Q: Who convinces Trenchard to help him steal some electronic components? Summary: The Doctor and Jo are trapped on the fort by a Sea Devil while the Master convinces Trenchard to help him steal some electronic components.