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Season guide

Mastermind: 1975

17 episodes Premiered Sep 4, 1975 Updated Sep 26, 2026
Previously on Mastermind

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Mastermind Season 3.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

35%
65%
Mytharc (6): Crucial lore & season climaxes
Core (11): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

Episode 1

Sep 4, 1975

Approximately four minutes of quick-fire specialist and general knowledge questioning confronts four doughty contenders for this year's Mastermind title. Memory, clarity, concentr

S4·E2 Mytharc

Episode 2

Sep 11, 1975

This second heat brings together contestants who between them have a wide variety of talent. As they grapple with the answers to questions both specialist and general knowledge, t

S4·E3 Core

Episode 3

Sep 18, 1975

Nottingham University provides the setting for tonight's ' Battle of the Polymaths.' The occupations represented are as diverse as the specialist subjects that have been chosen.

S4·E4 Mytharc

Episode 4

Sep 25, 1975

An American at Oxford University, a Miner, a Chartered Surveyor and a Systems Analyst make up the group who are in contention tonight for the Mastermind title. They are: RICHARD C

S4·E5 Core

Episode 5

Oct 2, 1975

Introduced by Magnus Magnusson from Sheffield University Tonight's contenders are: MARTIN MCCLELLAND, sheetmetal worker GEORGE BULL, solicitor PAULINE FOWLING, teacher KENNETH

S4·E6 Core

Episode 6

Oct 9, 1975

From which town will tonight's winner emerge? This group of would-be 'Master-minds' come from Northwich, Southport, Liverpaol and Wallasey. Tonight's contenders are: CECIL CRILL,

S4·E7 Core

Episode 7

Oct 16, 1975

Bath University provides the forum tonight for four more hopeful ' Masterminds.' Tonight's contenders are: FRANCIS HOWE, schoolmaster IVOR JEFFERY-MACHIN, Anglican priest GLYN

S4·E8 Mytharc

Episode 8

Oct 23, 1975

So far the preceding seven heats of Mastermind have been won by the men. Will the lone woman in tonight's group from Wales win through to the Semi-finals? Tonight's contenders ar

S4·E9 Core

Episode 9

Oct 30, 1975

The venue for tonight's heat is the Open University at Milton Keynes. Tonight's contenders are: PHILIP SKOTTOWE, Barrister GEORGE EARNSHAW, Lecturer JENNY JOHNSON, Histopatholo

S4·E10 Core

Episode 10

Nov 6, 1975

In the space of 30 minutes over 150 specialist and general knowledge questions will be offered to tonight's four contenders. How many of them will you get right? Tonight's contende

S4·E11 Core

Episode 11

Nov 13, 1975

This 11th heat comes from Scotland's ancient seat of learning, St Andrew 's University. Tonight's contestants are: KATHERINE WATT, retired teacher JAMES MURRAY, retired headmast

S4·E12 Core

Episode 12

Nov 20, 1975

From St Andrews University, Scotland, contestants from Northern Ireland, Southern Ireland, and Scotland battle for a place in the semi-final round. Tonight's contestants are: ALA

S4·E13 Core

Episode 13

Nov 27, 1975

Manchester University provides the venue for this semi-final, the first of four, one of which is reserved for the four best runners-up. Tonight's semi-finalists and their special

S4·E14 Core

Episode 14

Dec 4, 1975

Tonight's Semi-finalists are from Bournemouth, Wallasey, Bangor (Wales), and Glasgow. They are: IVOR JEFFERY-MACHIN, Anglican Priest, Dutch 17th-century painting NOEL FAGAN, form

S4·E15 Core

Episode 15

Dec 11, 1975

This third Semi-final comes from Southampton University. MARTIN CABOURN SMITH, chartered accountant, British Naval History of the First World War NEIL CROCKFORD, risk management

S4·E16 Mytharc

Episode 16

Dec 18, 1975

This Semi-final is devoted to the four best runners-up from the initial 12 heats, and it is the last chance for a woman to make it to the Final. But there are three of them lined u

S4·E17 Mytharc

Episode 17

Dec 22, 1975

Four worthy contestants line up for this the final hurdle to the championship title of Mastermind 1975. They are: JOHN HART, schoolmaster, Athens in 5th Century BC FRANCIS LAMBER

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