The story begins with the impossible disappearance of Architeuthis Dux— a gigantic squid – from London’s Natural History Museum. To some, that squid is simply a bizarre natural phenomenon. To others, it is an enigmatic divinity and a harbinger of the End of Days. The drama that arises from its disappearance illuminates the varied array of magical forces that live—have always lived—beneath the quotidian surface of London. The result is a visionary narrative of men and their gods, of magic, murder, and apocalypse.