The notion of a person–or even an object–having a double has been explored in the visual arts for ages, and in myriad ways: portraying the body and its soul, a woman gazing at her reflection in a pool, or a man overwhelmed by his own shadow. In this edited collection focusing on nineteenth- and twentieth-century western art, scholars analyze doppelgangers, alter egos, mirror images, double portraits and other pairings, human and otherwise, appearing in a large variety of artistic media. Artists whose works are discussed at length include Richard Dadd, Salvador Dali, Egon Schiele, Frida Kahlo, the creators of Superman, and Nicola Costantino, among many others.