The Book of General Ignorance round differs, in particular during the Christmas specials. During the course of the "B" Series special, Fry and Davies swapped places for "General Ignorance", with Fry attempting to answer questions ostensibly written by Davies to stump him. During "D"s Christmas Special, all the "GI" questions revolved around saints. "The Book of General Ignorance" contains a list of 230 questions, most of which previously appeared in episodes of "QI". Each question explains the correct answer, and usually attempts to show why people tend to make the wrong assumptions, or believe certain myths. Each book contains two forewords, one by Fry, the
And Then There Were None in Devon which inspired the setting of the story. The serialized version did not contain any chapter divisions. The book retailed for seven shillings and six pence. In the United States it was published under the title "And Then There Were None", again in both book and serial formats. Both of the original US publications changed the title from that originally used in the UK, due to the offensiveness of the word in American culture, where it was more widely perceived as a racially loaded ethnic slur or insult compared to contemporary UK culture, rather than a fairly innocent rhyme