The Mind of Evil (TV story)

Synopsis
The Doctor and Jo visit Stangmoor Prison for a demonstration of the Keller Machine - a device claimed to be capable of extracting negative emotions from hardened criminals.

The Doctor's scepticism seems valid when a prisoner called Barnham collapses whilst undergoing the treatment.

The Brigadier is meanwhile in charge of security at a World Peace Conference, where documents go missing and the Chinese delegate dies in mysterious circumstances. Captain Yates is away on another mission, transporting a banned Thunderbolt missile across country to be destroyed. The Doctor joins the Brigadier at the conference and they foil an attempt by the Chinese delegate's aide, Captain Chin Lee, to kill the American delegate. Lee is under the hypnotic control of the Master - otherwise known as Professor Emil Keller.

The Master uses the evil impulses stored within the Keller Machine - actually the container for an alien mind parasite - to cause unrest at Stangmoor. He then enlists the convicts' aid to hijack the Thunderbolt missile, planning to use it to blow up the peace conference and start World War Three.

Shielded by Barnham, now immune to the effects of the parasite, the Doctor transports the Keller Machine to a nearby airfield where the missile is being held.

Using the Machine to keep the Master occupied, he reconnects the missile's auto-destruct circuit and gets clear just before the Brigadier triggers it. The parasite is presumed destroyed in the resulting explosion, but the Master escapes in a van, running Barnham down in the process.

Plot
to be added

Cast

 * The Doctor - Jon Pertwee
 * Jo Grant - Katy Manning
 * Brigadier Lethbridge-Stewart - Nicholas Courtney
 * The Master - Roger Delgado
 * Captain Mike Yates - Richard Franklin
 * Corporal Bell - Fernanda Marlowe
 * Sergeant Benton - John Levene
 * Professor Kettering - Simon Lack
 * Captain Chin Lee - Pik-Sen Lim
 * Dr. Summers - Michael Sheard
 * Prison Governor - Raymond Westwell
 * Barnham - Neil McCarthy
 * Linwood - Clive Scott
 * Chief Prison Officer Powers - Roy Purcell
 * Senior Prison Officer Green - Eric Mason
 * Mailer - William Marlowe
 * Vosper - Hayden Jones
 * Fu Peng - Kristopher Kum
 * Charlie - Tommy Duggan
 * Senator Alcott - David Calderisi
 * Major Cosworth - Patrick Godfrey
 * Fuller - Johnny Barrs
 * Prison Officers - Bill Matthews, Barry Wade, Dave Carter, Martin Gordon
 * Main Gate Prisoner - Matthew Walters

Crew

 * Action / Stuntwork - HAVOC
 * Assistant Floor Manager - Sue Hedden
 * Costumes - Bobi Bartlett
 * Designer - Ray London
 * Film Cameraman - Fred Hamilton, Max Samett
 * Film Editor - Howard Billingham
 * Incidental Music - Dudley Simpson
 * Make-Up - Jan Harrison
 * Producer - Barry Letts
 * Production Assistant - John Griffiths
 * Script Editor - Terrance Dicks
 * Special Sounds - Brian Hodgson
 * Studio Lighting - Eric Monk
 * Studio Sound - Chick Anthony
 * Theme Arrangement - Delia Derbyshire
 * Title Music - Ron Grainer
 * Visual Effects - Jim Ward

Story Notes

 * This is the first occurrence of subtitles on screen in Doctor Who, the only other time is in The Curse of Fenric.

Ratings
to be added

Myths
to be added

Location Filming

 * Location filming took place in Dover Castle in Kent.

Discontinuity, Plot Holes, Errors
to be added

Continuity

 * The Doctor alludes to Inferno "I saw an entire world consumed by fire".
 * The Master's greatest fear (of the Doctor looming over him) becomes real in Last of the Time Lords.
 * UNIT runs the second World Peace Conference in Day of the Daleks.

DVD and Video Releases
to be added

Target Novelisations

 * The Mind of Evil was novelised as The Mind of Evil (novelisation) by Terrance Dicks in 1985 by Target Books.