Snuff is the 39th novel in the Discworld series, written by Terry Pratchett. It was published on 11 October 2011 in the United States, and 13 October 2011 in the United Kingdom. The book is the third-fastest-selling novel in the United Kingdom since records began, having sold over 55,000 copies in the first three days. The book is the eighth City Watch story and is based largely around Commander Sir Sam Vimes. Pratchett emphasised that the word 'snuff' has "at least two meanings".