Season
- Season 0 1976-01-01
- Season 1 1972-09-11
- Season 2 1973-09-03
- Season 3 1974-09-05
- Season 4 1975-09-04
- Season 5 1976-09-07
- Season 6 1977-08-30
- Season 7 1978-09-07
- Season 8 1979-09-05
- Season 9 1980-08-31
- Season 10 1981-09-06
- Season 11 1983-01-09
- Season 12 1984-01-29
- Season 13 1985-01-06
- Season 14 1986-01-12
- Season 15 1987-01-04
- Season 16 1988-01-07
- Season 17 1989-01-15
- Season 18 1990-01-07
- Season 19 1991-01-20
- Season 20 1992-02-16
- Season 21 1993-01-10
- Season 22 1994-03-20
- Season 23 1995-04-09
- Season 24 1996-05-29
- Season 25 1997-06-09
- Season 30 2003-07-07
- Season 31 2004-06-21
- Season 32 2005-03-08
- Season 33 2006-03-30
- Season 34 2007-07-09
- Season 35 2008-09-05
- Season 36 2009-08-28
- Season 37 2010-08-20
- Season 38 2011-11-04
- Season 39 2012-08-10
- Season 40 2013-08-09
- Season 41 2014-08-08
- Season 42 2015-08-07
- Season 43 2016-07-13
- Season 44 2017-07-28
- Season 45 2018-10-05
- Season 46 2019-08-09
- Season 47 2020-10-05
- Season 48 2021-08-23
- Season 49 2022-09-19
- Season 50 2023-08-28
- Season 51 2024-08-12
Season 51 Episode
- Season 10 Episode 1
- Season 10 Episode 2
- Season 10 Episode 3
- Season 10 Episode 4
- Season 10 Episode 5
- Season 10 Episode 6
- Season 10 Episode 7
- Season 10 Episode 8
- Season 10 Episode 9
- Season 10 Episode 10
- Season 10 Episode 11
- Season 10 Episode 12
- Season 10 Episode 13
- Season 10 Episode 14
- Season 10 Episode 15
- Season 10 Episode 16
- Season 10 The Final
Mastermind - Season 10 Episode 13
5.40 30 minutes Winners from the first round return to face each other in the debating chamber of the Oxford Union Society in this, the first of the semi-finals.
Janet Barker (housewife): The films of Alfred Hitchcock James Craven (cook-general): Life of Eva Peron 1919-1952 John Hill (retired colonial administrator) Geography of Fiji Nicholas Woodward (tax inspector): Test cricket 1877-1930
