Adam Bell is 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 Clair, and decides to track him down. The identical men meet and their lives become bizarrely and irrevocably intertwined.
- Denis Villeneuve.....Director
- Jake Gyllenhaal.....Adam + Anthony
- Mélanie Laurent.....Mary
- Sarah Gadon.....Helen
- Isabella Rossellini.....Mother
- Joshua Peace.....Teacher at School
- Tim Post.....Anthony's Concierge