Ankh-Morpork's police force, transformed from a demoralised rump of three officers into a functioning law enforcement body under Commander Sam Vimes. The Watch novels follow Vimes and his officers - Carrot Ironfoundersson (a human raised by dwarfs who may be the rightful king), Angua (a werewolf), Detritus (a troll), Cheery Littlebottom (a dwarf forensics officer) - as they bring policing to a city that has never really had it. The Watch represents Pratchett's most sustained exploration of justice, duty, and what it means to be civilised.