(MAILER has to help the DOCTOR up and out of the chair.) Another prisoner - CHARLIE - is with him.) JO: The Master!
Plan: A: the Doctor; Q: Who is Jo held prisoner with? A: the Master; Q: Who convinces Mailer to help him steal the Thunderbolt? Summary: With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.