Cinema has a long tradition of exploiting the notion of the double. This is because of the cinematic resources that are available to convincingly portray, visually, a doppelgänger. Alfred Hitchcock was the master of this form. In several films including Shadow of a Doubt, Strangers on a Train, The Wrong Man, Vertigo, and Psycho, Hitchcock established himself as the master of horror and exploited several different manifestations of the double. Other films dealing with the double, including The Matrix, Solaris, and Avatar, are also discussed.