The Fifth Elephant is a 1999 fantasy novel by British writer Terry Pratchett, the 24th book in the Discworld series. It introduces the clacks, a long-distance semaphore system.

His Grace, The Duke of Ankh, Commander Sir Samuel "Sam" Vimes is a fictional character in Terry Pratchett's Discworld series of novels and short stories. He is a major character in six novels and one