The City Watch series is one of the major story lines that make up 8 of the Discworld books. It focuses on the Ankh-Morpork City Watch, formerly the Ankh-Morpork Night Watch, in particular the captain and later commander of the Watch Samuel Vines, usually when he is being manipulated by Lord Vetinari. The books tend to be whodunit in nature and often feature conspiracies aimed at toppling regimes.