Episode 20—2023/24

20/31 Subjects include Kim Philby, the castles of north Wales and the life of Thomas Hardy.

Episode 19—2023/24

19/31 Subjects include Leeds United Football Club and Sir Trevor McDonald.

18/31 Subjects include British garden birds, The Big Bang Theory and the films of Orson Welles.

17/31 Subjects include Meat Loaf, Grinling Gibbons and England women's cricket since 2000.

16/31 Subjects include Bridget Riley, the sitcoms of Peter Kay and the history of St Albans.

15/31 Subjects include The League of Gentlemen, Nigel Mansell and Ren茅 Magritte.

14/31 Subjects include the New York subway system and the 'Ocean's' films.

13/31 Subjects include the films of Martin McDonagh and the music of Tom Waits.

12/31 The specialist subjects include Exmoor National Park and the films of Quentin Tarantino.

11/31 The specialist subjects include Sir Isaac Newton, Mary Queen of Scots and Billy Bragg.