QI the working title "Quote Interesting". This book was eventually published in 2008 as "Advanced Banter". Similarly, on the Banter feature of the Series B DVD, Lloyd also previewed the title of "QI"s fourth book, "The QI Book of the Dead", which went on sale on 15 October 2009. 7 October 2010 saw the publication of "QI"s fifth book—"The Second Book of General Ignorance". Written by the same authors, this book covers a whole new series of questions on a wide variety of topics, which promises to prove that "everything you think you know is (still) wrong". The sixth "QI" book,
The Mystery of the Sphinx Channel over the next decade. "Mystery" was initially released by Goldhil Home Media as a 95 minute "extended version" on VHS in 1994, and re-released on DVD by UFOTV as a 95 minute "Special Edition" in 2005. The VHS release was described in a 1994 review as "a fascinating combination of science and humbug." Robert M. Schoch criticized the extended version of the documentary, saying "Unfortunately, the original documentary has since been re-edited and expanded with all sorts of extraneous material, some of which I am not at all happy about, and is currently being marketed by 'UFO TV'. It