The Ending Of Enemy Explained

Although the spiders may be the most obvious mystery at the end of "Enemy," the movie also doesn't provide any definitive answers as to where Adam and Anthony came from. Thanks to a key scene where Mary notices a mark left by Anthony's wedding ring, we know that they are actually two separate people. Adam doesn't have the mark, because he doesn't wear a wedding ring. 

Now buckle up, because this part gets weird: They may be separate people in the movie's present, but that doesn't necessarily mean that the two were always separate entities. They have the exact same scar on their chests, suggesting that they may have had the same injury when they were younger. Now, we've got to get biblical. In the Bible, God creates Eve by taking one of Adam's ribs. Given the location of Adam and Anthony's scars, it's possible that Anthony was made from Adam, who shares his name with the first man.

After Anthony was created, the two lived separate lives, developing different personalities. The two may also share a mother. When Adam goes to see his mother (Isabella Rosellini), she believes he likes blueberries, when that's really Anthony. She also references his nice apartment (Adam's apartment isn't nice, but Anthony's is), and his acting career (Anthony's an actor, but Adam isn't). Adam's mother seems to have confused the two, suggesting that she is the mother of both Anthony and Adam.

We don't get a clear explanation for the duplicates — and it may just be a case of uncanny doubling, a classic literary trope — but the biblical explanation is as compelling as any other if you're looking for some closure.