Enemy

Denis Villeneuve spins an intricate and enthralling web in Enemy, his 2013 psychological thriller about a seemingly ordinary college professor who one day discovers that he might be a twin, a clone, or the inexplicably perfect doppelganger for a struggling actor. After catching sight of an actor who bears an uncanny resemblance to him, Adam Bell (Jake Gyllenhaal) sets out to learn more about who the other man, Anthony Claire (also Gyllenhaal) is.
While neither Adam nor Anthony recall having any siblings or undergoing secret genetic experiments, they also can’t deny that they’re dead ringers for one another down to minute marks on their bodies that biologically identical twins do not tend to share. Knowing that there’s someone else out in the world whose lives they could easily slip into unnoticed opens both Adam and Anthony’s imagination to all of the possibilities their meeting presents, but both men’s minds begin to wander to dark places when they realize that they may have more in common than they think.