The nation's most curious quiz show, QI XL, returns with Series X. The series promises another run of razor-sharp wit, unexpected facts and the very best in comedy talent.  

At the helm once again is Sandi Toksvig, joined by Alan Davies, as they lead a brilliant line up of guests through a series of curious questions and Quite Interesting facts. Along the way, they'll reminisce over Xs and Exes, uncover X Animals, celebrate Xmas, and explore the Xtreme.