• title card: white all caps text reading ‘THE BIG THINKER’ superimposed on a croner of the lab, showing a maniframe computer rack and cooling pipe
  • Dr. Kearns plays cards, unaware that his mathematical ability will not help him in a rigged game
  • Dr. Clemens is found dead in one of the ducts, Dr. Kearns peers in from the far end
  • Cathy and Steed hold Broster and Clarissa at gunpoint after disarming them
  • Farrow sees his own name on the printout identifying the killer
  • Steed’s bag is packed for a mission in Tel Aviv and tagged with his Carruthers alias

Series 2 — Episode 12
The Big Thinker

Teleplay by Martin Woodhouse
Directed by Kim Mills

Production No 3514, VTR/ABC/2217
Production completed: December 13 1962. First transmission: December 15 1962.

Production details

Episode 15 (41)
Production Number : 3514
VTR/ABC/2217 & 2217 A + B
Teddington Studio 1

Wednesday 12th December 1962

Camera rehearsal 10.00–12.30
Lunch break 12.30–13.30
Camera rehearsal 13.30–18.00
Supper break 18.00–19.00
Line Up and Make Up 19.00–19.30
Camera rehearsal 19.30–20.00
VTR INSERTS
(VTR/ABC/2217-A + B)
20.00–20.30
Camera rehearsal 20.30–21.00

Inserts:

  • 2217A - Brensall’s death - 0:18–2:00
  • 2217B - Cathy & Steed meet in the Amusement Arcade - 9:00–11:43

Thursday 13th December 1962

Camera rehearsal 10.00–12.30
Lunch break 12.30–13.30
Camera rehearsal 13.30–15.30
Tea break, Line-up,
Normal scan, Make-up
15.30–16.15
Dress rehearsal 16.15–17.30
Notes 17.30–18.00
Line Up 18.00–18.30
VTR 18.30–19.30

Equipment

Cameras: 4 Pedestals
Sound: 4 booms; 1 slung mic.in Ops. Room.
Telecine: ABC symbol and Caption Scanner only.
VTR: 2 Inserts

Running time

Expected: 51′25″
Actual running time with bumpers: 51′46″

The bumpers between the acts are generally 10 seconds from fade in to the “End of Act” bumper to the end of audio before the commercial, a 10 second still without audio, then cut to the next act bumper. This would play with the theme for around 10 seconds. Accordingly, with the episodes being in 3 acts, the running time of the action is approximately a minute less than listed above, minus the opening and closing credits (normally 0′16″, with a 2" fade, and anywhere from 0′41″ to 1′20″, hard cut or 1" fade or mix, respectively).

Regional broadcasts

BroadcasterDateTime
ATV London15/12/196210.05pm
ABC Midlands15/12/196210.05pm
ABC North15/12/196210.05pm
Anglia Television15/12/196210.05pm
Border Television15/12/196210.05pm
Channel Television15/12/196210.05pm
Grampian Television10/03/196310.35pm
Southern Television15/12/196210.05pm
Scottish Television13/06/196310.45pm
Tyne Tees Television15/12/196210.05pm
Ulster Television15/12/196210.05pm
Westward Television15/12/196210.05pm
Television Wales & West15/12/196210.05pm
Teledu Cymru (WWN)15/12/196210.05pm
ABN2 Sydney13/01/19647.30pm
ABV2 Melbourne6/08/19647.30pm

TV Times listing

TV Times listing for December 15 1962, 10.05pm (London edition)
Sydney Morning Herald listing for January 13 1964, 7.30pm
The Age listing for August 6 1964, 7.30pm

10.5 The Avengers
starring
Patrick Macnee
in

The Big Thinker
Teleplay by Martin Woodhouse
Also starring
Honor Blackman

Cast

Dr. Clemens Walter Hudd
Catherine Gale Honor Blackman
Dr. Farrow David Garth
Dr. Hurst Tenniel Evans
Janet Lingfield Marina Martin
Dr. Kearns Anthony Booth
John Steed Patrick Macnee
Broster Allen McClelland
Clarice Penelope Lee
Blakelock Ray Browne

The Avengers theme composed and
played by Johnny Dankworth
Settings by James Goddard
Producer Leonard White
Directed by Kim Mills

Steed sends Cathy to visit Plato — the world’s most advanced computer — and they discover that the machine can remember a murderer

ABC Television Network Production

Episode availability

Murders

Victim Killer Method
Dr. Brensell Dr. Farrow gassed and frozen
Dr. Clemens Dr. Farrow electrocuted
Dr. Farrow Dr. Farrow electrocuted
Click a name to see the face

Transport

Marque/type Plate
none

Continuity and trivia

  1. 4:14 — Kearns’ calculations:
    (4 x 3162)2 = 175... 8919... 2978... 304... oh, and so on and so forth.
    apparently, contrary to what he says, it appears neither Kearns nor Plato can add up as the answer is 159539531776.
    3259 / 263 = 12.39163498098 recurring? - no, 8.. 2... [1 2 9] (spots Cathy) hello, hello, what have we here?
    (It’s actually 12.391634980986).
  2. 9:28 — When Cathy says that Hurst is in a panic and wants “MI5, the Navy, whoever” Steed replies, “You he can have, I’m off to the Middle East tonight.” Is this an admission that Steed’s organisation is MI5?
  3. At the end of their discussion in the amusement arcade, Cathy says, “You’re staying out of it?” and Steed replies, “Yep, you go right ahead, Mata Hari. Just send me a postcard.”
  4. Pinball scores:
    Cathy: 1970 Steed: 1280 and 1891 (well, it goes up a bit more, but we don’t see the final score)
  5. 24:28 — the camera takes a second to focus on Cathy when she turns on the light.
  6. 28:15 — the camera dips briefly as if it collided with something
  7. 30:14 — Anthony Booth delivers a lengthy monologue which he partly ad libs for effect. Script
    KEARNS: What did you hire me for? Not my manners, surely. Because I understand him. I know what makes him tick. Nobody else does. You’d turn Plato over to that bunch of ha1f-wits? Let’s take Farrow. He’s okay, if he sticks to his astronomy. Then there’s Hurst. You know what? He’s afraid. So we’re left with little Miss Lingfield. She ought to be in somebody’s be:d, not pushing buttons on that desk. She can get together with that anthropologist woman and talk knitting. So can all of you. Go and chase your spies if you want — but I’ve got work to do. If you want to throw me out, you’d better bring on your little security men. All right?
    Broadcast
    KEARNS: What did you hire me for? Hmm? Not my manners, surely. You hired me because I understand Plato. I know what makes him tick. Nobody else does! You mean to say you’re going to hand over Plato over to - to that bunch of ha1f-wits? All right, let’s take Farrow. He’s all right, if he sticks to astronomy. Then there’s Hurst. (LAUGHS) That’s a laugh! Huh! He’s afraid of his own shadow! So what does that leave us? That leaves us with our dear little Miss Lingfield here. Oh, she should be at home in someone’s bed, not - not pushing buttons here. No, she can get together with that, with that anthropology bird and talk knitting.Listen, you can all talk knitting for all I care. All right, look, if you want to do it, go ahead, go ahead, chase your spies, all right? — but leave me alone, I’ve got work to do. If you want to get rid of me, if you want to throw me out, bring your security men to do it for you. Okay?
  8. 38:41 (37:33) - One of those boom mikes sneaks into shot again while Steed is helping Cathy apprehend Broster and Clarissa. It even more briefly reappears at 38:57 in the reverse shot.
  9. 39:15 — Steed identifies himself to the police as “Carruthers” and at the end of the episode his luggage has a nametag which has “J. Carruthers” written on it. He uses the alias again in Killer Whale.
  10. 50:30 — instructions for caring for Sheba: half a pound of meat, some seaweed powder, a special teaspoonful of cod liver oil and a long walk daily.
Times are from the re-mastered 2009 Optimum Releasing DVD set, any times in brackets are from the previously released DVD sets which had frames with interference or banding deleted, resulting in shorter running times.

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