The Qartheen are described as "tall pale folk in linen and samite and tiger fur", with the women wearing gowns that leave one breast bare, while the men sport beaded silk skirts. Daenerys perceives them as "nothing if not polite". Slaves serve their needs. The Pureborn, descendants of the city's ancient kings and queens, govern Qarth and also command the city's defenses. Three principal merchant groups battle amongst themselves and against the Pureborn for dominance of the city: the Thirteen, the Ancient Guild of Spicers, and the Tourmaline Brotherhood. Qarth's warlocks, whose lips are turned blue from a potion called "the shade of the evening", are said to brood over these factions; they are still feared although their power and prestige have waned over the years. Qarth is also home to the Sorrowful Men, a guild of assassins named so for whispering "I am so sorry," before killing their victims. Daenerys leaves Qarth again at the end of "A Clash of Kings".