Stephen K Amos, Ivo Graham, Holly Walsh and Alan Davies join Sandi Toksvig for silly season at QI.
Alex Horne reveals new snacks, and Frankie Boyle discovers why cats love strings.
Jenny Eclair shares her knowledge about hemorrhoids. Frankie Boyle has firm opinions on golf.
Expect painting, stamping, forgotten rules and sneaky prizes in a sort-of-semi-finale.
Can the comedians keep together for an important sausage exam?
