Book excerpt: A cult classic, adapted into a film starring Christian Bale. Is evil something you are? Or is it something you do? Patrick Bateman has it all: good looks, youth, charm, a job on Wall Street, reservations at every new restaurant in town and a line of girls around the block. He is also a psychopath. A man addicted to his superficial, perfect life, he pulls us into a dark underworld where the American Dream becomes a nightmare . . . With an introduction by Irvine Welsh, Bret Easton Ellis's American Psycho is one of the most controversial and talked-about novels of all time. A multi-million-copy bestseller hailed as a modern classic, it is a violent black comedy about the darkest side of human nature.