Doctor Who: Season 8, Episode 8

The Mind of Evil: Episode Four (20 Feb. 1971)

TV Episode  -   -  Adventure | Drama | Sci-Fi
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Ratings: 7.6/10 from 93 users  
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With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.



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Title: The Mind of Evil: Episode Four (20 Feb 1971)

The Mind of Evil: Episode Four (20 Feb 1971) on IMDb 7.6/10

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Episode cast overview:
Roger Delgado ...
Nicholas Courtney ...
Katy Manning ...
Richard Franklin ...
William Marlowe ...
Hayden Jones ...
Lenny Vosper (as Haydn Jones)
Fernanda Marlowe ...
David Calderisi ...
Bill Matthews ...
Prison Officer
Barry Wade ...
Prison Officer
Dave Carter ...
Prison Officer
Martin Gordon ...
Prison Officer


With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.

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Plot Keywords:

master | military officer | dandy





Release Date:

20 February 1971 (UK)  »

Company Credits

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Technical Specs

Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


This episode was watched by 7.4 million viewers on its original transmission. See more »

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User Reviews

Decent Doctor Who story.

Doctor Who: The Mind of Evil: Episode Four (not 'Part 4') starts as the Master (Roger Delgado) prevents the Keller machine from killing the Doctor (Jon Pertwee) as he still needs him him to operate the machine while he isn't there, the Doctor is taken away & put in a cell with Jo (Katy Manning). The Master convinces Mailer (William Marlowe) & the other inmates to help him steal the Thunderbolt missile which is precisely what they do, with the missile in his possession can anything stop the Master completing his evil plan?

Episode 8 from season 8 this Doctor Who adventure was originally aired here in the UK during February 1971, directed by Timothy Combe this is a good Doctor Who story that I've liked so far although I don't rate it as any sort of classic. The script by Don Houghton has made it's first mention of aliens during this episode as it is revealed that an alien parasite is inside the Keller machine & one that feeds of negative emotions & feelings, it's an OK idea but it's taken a while for it to come out. This episode is more action orientated as there is a sequence which shows the ambush of the Thunderbolt missile while the Doctor does very little, in fact he's either lying on a bed in a cell or sitting in a chair. The story is a little hard to follow & I could see a lot of potential viewers losing interest especially the younger ones. I also don't get how the prisoners can freely leave Stangmoor, do the authorities not know they have taken control of the prison & have murdered several guards? If not why not? I mean prisoners can't just kill a load of prison guards & take over the place & expect no-one to notice. I just seems a little far fetched to me even by Doctor Who standards & is a poorly thought out part of the plot.

There are a few more special effects in this episode, whenever the Keller machine appears or disappears the screen 'wobbles' & it looked a little silly to me. The Mind of Evil hasn't been scary either although the black and white image adds a little atmosphere, there's not been any monster apart from the awful looking dragon & it feels like an action espionage thriller with the character of the Doctor just thrown into things. The hijacking of the Thunderbolt missile is a well staged action set-piece & the missile itself looks pretty good.

The Mind of Evil: Episode Four is another good episode, however as part of an overall story rather than an individual episode as which it's rather forgettable if still very much worth watching.

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