(CHIN LEE struggles to sit up, rubbing her head. (MAILER takes the cuffs off the MASTER who points the gun at the DOCTOR, forcing him to sit in the chair next to the silent Keller machine. (POWERS walks in.) (The MASTER has heard enough. (The room is filled with the noise of the Keller machine. Get back! MAILER: (To JO.) STANGMOOR PRISON.
Plan: A: Chin-Lee; Q: Who has been using the Keller Machine to carry out assassinations? A: the Doctor; Q: Who heads back to Stangmoor to find the Master and Mailer have staged another riot? A: Mailer; Q: Who has the Master teamed up with to stage another riot? Summary: Realising Chin-Lee has been using the power of the Keller Machine to carry out assassinations, the Doctor heads back to Stangmoor, only to find the Master has teamed up with Mailer to stage another riot.