Vampires: The World of the Undead (US title: Vampires: Restless Creatures of the Night; French: Sang pour sang, le réveil des vampires, lit. 'Blood for Blood: The Reawakening of the Vampires') is an illustrated monograph on cultural history of vampires and vampire folklore and literature, published in pocket format by Éditions Gallimard, in 1993. Written by the French professor of English literature and specialist on vampire myth, Jean Marigny, this work is the 161st volume in the 'Découvertes Gallimard' collection (known as 'New Horizons' in the United Kingdom, and 'Abrams Discoveries' in the United States).