Adam Bell, a glum, disheveled history professor who seems disinterested even in his beautiful girlfriend Mary. Watching a movie on the recommendation of a colleague, Adam spots his double; a bit-part actor named Anthony St. Clair, and decides to track him down. The identical men meet and their lives become bizarrely and irrevocably intertwined.

Adam Bell, a glum, disheveled history professor who seems disinterested even in his beautiful girlfriend Mary. Watching a movie on the recommendation of a colleague, Adam spots his double; a bit-part actor named Anthony St. Clair, and decides to track him down. The identical men meet and their lives become bizarrely and irrevocably intertwined.

Five years after the death of her beloved husband Garrett (Ed Harris), Nikki (Annette Bening) meets Tom, a man who seems to be Garrett s exact duplicate. Not only does Tom possess the same physical characteristics, but he also shares Garrett's kindness, humor, and passion for art. And yet he is a stranger. As romance blossoms between Nikki and Tom, she finds she can't bring herself to tell him the truth about what drew her to him. But as their relationship...