Set in Manhattan during the Wall Street boom of the late 1980s, "American Psycho" follows the life of wealthy young investment banker Patrick Bateman. Bateman, in his mid-20s when the story begins, narrates his everyday activities, from his recreational life among the Wall Street elite of New York to his forays into murder by night. Through present tense stream-of-consciousness narrative, Bateman describes his daily life, ranging from a series of Friday nights spent at nightclubs with his colleagues—where they snort cocaine, critique fellow club-goers' clothing, trade fashion advice, and question one another on proper etiquette—to his loveless engagement to fellow yuppie Evelyn and his contentious relationship with his brother and senile mother. Bateman's stream of consciousness is occasionally broken up by chapters in which he directly addresses the reader in order to critique the work of 1980s pop music artists. The novel maintains a high level of ambiguity through mistaken identity and contradictions that introduce the possibility that Bateman is an unreliable narrator. Characters are consistently introduced as people other than themselves, and people argue over the identities of others they can see in restaurants or at parties. Deeply concerned with his personal appearance, Bateman gives extensive descriptions of his daily aesthetics regimen.