Description: Character interacts with a younger version of himself. Night Watch is the 29th novel in Terry Pratchett's Discworld series, published in 2002. The protagonist of the novel is Sir Samuel Vimes, commander of the Ankh-Morpork City Watch. A five-part radio adaptation of the novel was broadcast on BBC Radio 4 from February 27, 2008 that featured Philip Jackson as Sam Vimes and Carl Prekopp as young Sam.