QI XL: Season 4

Episodes

1. 1. I-Spy

   Sep 10, 2011

2. 2. International

   Sep 17, 2011 · 44m

3. 3. Imbroglio

   Sep 24, 2011 · 44m

4. 4. Indecision

   Oct 1, 2011 · 44m

5. 5. Invertebrates

   Oct 8, 2011 · 44m

6. 6. Inventive

   Oct 15, 2011 · 44m

7. 7. Incomprehensible

   Oct 22, 2011 · 44m

8. 8. Inequality

   Oct 29, 2011 · 44m

9. 9. Illness

   Nov 5, 2011 · 44m

10. 10. Inland Revenue

    Nov 12, 2011 · 44m

11. 11. Infantile

    Nov 19, 2011 · 44m

12. 12. Illumination

    Nov 26, 2011 · 44m

13. 13. Intelligence

    Dec 3, 2011 · 43m

14. 14. Idleness

    May 24, 2012

15. 15. Ice

    Dec 30, 2011 · 44m

16. 16. Immortal Bard

    May 19, 2012 · 44m

Episode information from TMDB. Air dates refer to the original broadcast or release.