Last updated 02 January 2017
Broadcast: Wednesday 15th October 2014
8:30pm-9:00pm EDT (00:30 GMT) « » « »
Featuring: Jon Pertwee, Nicholas Courtney, Katy Manning, Richard Franklin, Pik-Sen Lim, Michael Sheard, Raymond Westwell
At Stangmoor Prison, the Doctor and Jo watch a demonstration of the Keller Machine which can extract evil impulses from criminals. But the experiment goes wrong and a man dies.
Synopsis Source: Doctor Who Guide
This episode is the world premiere of the colourised episode one on television.
Broadcast Source: Retro TV