John Humphrys asks the questions as five contenders take the walk to the black chair in another semi-final. The subjects are the League of Gentlemen, the Harry Devlin novels of Martin Edwards, the Romanov dynasty, Manchester United under Sir Alex Ferguson and the life of Ernest Hemingway.
Why not read up about this week's specialist subjects with the following links?
BBC Comedy's The League of Gentlemen site
The League of Gentlemen on IMDB
The Harry Devlin Novels of Martin Edwards
Harry Devlin on Wikipedia
The Romanov Dynasty
Romanov Dynasty by the Encyclopedia Britannica
Prominent Russians on Russiapedia
Manchester United under Alex Ferguson
Sir Alex Ferguson A to Z by The Guardian
Alex Ferguson at Manchester United by the Mirror Online
The Life of Ernest Hemingway
Ernest Hemingway biography on the Bio site
Ernest Hemingway by The Official Site Of The Nobel Prize