Release Message: The Brigadier has recaptured Stangmoor but the Master still has control of the Thunderbolt and the Doctor (Jon Pertwee) must find a way to stop him and destroy the Keller Machine.
Description: The Brigadier has recaptured Stangmoor but the Master still has control of the Thunderbolt and the Doctor must find a way to stop him and destroy the Keller Machine.