Against the advice of a local white witch, a prehistoric barrow at Devil's End is cut open. A mysterious force erupts killing the professor responsible for the excavation and concussing the Doctor.  When he recovers he finds that the village has been cut off by a heat barrier. The Master - posing as the new vicar - has used psionic science to release the power of a Daemon named Azal. The Daemons are outer space creatures who came to Earth along time ago and contributed to the shaping of Human history.  Azal, last of the Daemons on Earth, has remained to offer his power to a worthy Human - or destroy Earth as a flawed experiment! The Doctor shows the Brigadier how to make a tunnel through the heat barrier. The Doctor is attacked by the villagers, under the Master's control, then he meets Azal, who offers him his power.  The Doctor refuses and is about to be destroyed when Jo interposes herself. Azal, confused by this act of self-sacrifice, destroys himself.  The Master is finally captured. 
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The Doctor:  Jon Pertwee
Jo Grant: Katy Manning
Brig. Lethbridge-Stewart: Nicholas Courtney
Sergeant Benton: John Levene
Captain Yates: Richard Franklin

Guest Appearances:
The Master: Roger Delgado
Miss Hawthorne: Damaris Hayman
Dr. Reeves: Eric Hillyard
Alistair Fergus: David Simeon
Harry: James Snell
Prof. Horner: Robin Wentworth
Winstanley: Rollo Gamble
Bert: Don McKillop
Tom Girton: John Croft
Groom: Christopher Wray
Garvin: John Joyce
Baker's Man: Gerald Taylor
Bok: Stanley Mason
Osgood: Alec Linstead
Thorpe: John Owens
Azal: Stephen Thorne
Jones: Matthew Corbett
TV Cameraman: Robin Squire
Corporal: Patrick Milner
Morris Dancers: The Headington Quarry Men
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Producer: Barry Letts.
Script Editor:Terrence Dicks.
Writer: Bob Baker, Dave Martin.
Director: Michael Ferguson.
Designer: Kenneth Sharp. 
Costume: Barbara Lane.
Make up: Jan Harrison (episodes 1,2), Rhian Davies (episodes 3,4).
Visual Effects: John Horton.
Music: Dudley Simpson.
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Novelised as "Doctor Who - The Daemons"  by Barry Letts  (0 426 11332 2) first published by Universal Tandem in 1974 as "Doctor Who and The Daemons" with cover by Chris Achilleos. New edition by W.H. Allen (now Virgin Publishing Ltd.) in 1980 with cover by Andrew Skilleter.  New edition in 1993 with cover by Alister Pearson.  Target library number 15.
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Also issued by Titan Books as a script book, "The Daemons," edited by John McElroy, with cover art by Alister Pearson.

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Released as "The Daemons" April 1993 and in Australia & New Zealand (BBC catalogue #4950). Released in US & Canada 1993 (CBS/FOX catalogue #4791, reclassified as WHV #E1141); Cover art by Alister Pearson. Episode 5 is also featured (in black & white) on "The Pertwee Years" (BBC catalog #4756 in UK, March 1992, Australia & New Zealand, CBS/FOX catalogue #5732 in US & Canada 1992. First released in 1993 with cover by Alister Pearson.

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A real troupe of Morris dancers, "The Headington Quarry Men" were hired to peform on location.
Several cast and crew members returned to the locations the serial was filmed at for the Reeltime reunion documentary "Return to Devil's End".

All five episodes exist in color. Episode 4 on PAL 2" color videotape held by the Film & Videotape Library, and episodes 1, 2, 3 and 5 on PAL D3/NTSC U-Matic color restorations. Story also exists as 16mm black & white telerecordings.

Studio recording in TC3. (26 May 1971)
Studio recording in TC4. (11, 19 May 1971)
Aldbourne, Wiltshire.
...• St Michales Church. (20, 29-30 April 1971)
...• Village Green. (20, 24, 28-30 April 1971)
...• The Blue Boar Public House. (20, 28 April 1971)
...• 3 Crooked Corner. (22 April 1971)
The Four Barrows, Aldbourne, Wiltshire. (21-22 April 1971)
Cambell Aircraft Company, Membury Airfield, Membury, Wiltshire. (19 April 1971)
Lane by Oaken Coppice, Knighton, Wiltshire. (19 April 1971)
Old Airfield, Darrells Farm, Ramsbury, Wiltshire. (23 April 1971)
Airfield, Darrells Farm, Ramsbury, Wiltshire. (26-27 April 1971)

Episode 1 - As the Doctor demonstrates Bessie's new ability to drive around by herself, watch her as she completes the loop out in front of the garage and starts to drive offscreen: you can spot the face of the stunt driver scrunched down in the front seat.
Episode 1 - It's practically impossible for the wind to cause a road sign to spin around. Think about it: the only way a sign would spin around like that would be if the forces exerted on the left and right sides were coming from opposite directions – which could only happen if the sign was in the centre of a tornado!
Episode 1 - During the scene where Miss Hawthorne exorcises the winds, her clothes rearrange themselves between shots.
Episode 1, 2 - Jo and the Doctor try to make their way up to Devil's End at night, but their path is blocked by a tree, so they both decide to get out of Bessie and continue on foot. Notice that they leave Bessie's headlights on. Later, when the Doctor goes back to collect Bessie, her headlights are off, and moreover, her engine starts instantly – no hint of a flat battery!
Episode 2 - Garvin's shotgun gets broken in two during his struggle with Benton in the cavern and he has to use both hands to hold it together.
Episode 2, 3 - When the van (milk float) crashes into the signpost and bursts into flames because of the heat barrier, the signpost clearly says 'Devils End 1' (i.e. one mile). In the next episode though, we hear it explained that the heat barrier supposedly has a five mile radius centred on the village church.
Episode 3 - The Doctor mispronounces "Daemons" as "day-mons" on two different occasions in this episode, but refers to them correctly as "dee-mons" the rest of the time.
Episode 4 - At the beginning of the episode, after the Master shouts "Go back to the mark!" we cut away to the Doctor and the Brigadier at the heat barrier. However, the Master's voice can still be heard for a few seconds (shouting "Go back!") on the soundtrack.
Episode 4 - During the ceremony where the Master summons Azal for the last time, there is a wide shot of the cavern, and you can see something white (probably a clipboard held by a crew member) appear briefly in the bottom-right corner of the picture.
Episode 4, 5 - Just before Azal appears, look behind the Master's left shoulder and spot-the-crew-members.
Episode 4, 5 - In episode 4 the energy exchanger interferes with radio communication, but by episode 5 it has conveniently lost this annoying side-effect.