 James FrancoTomas Eldan | Tomas Eldan |
 Rachel McAdamsSara | Sara |
 Charlotte GainsbourgKate | Kate |
 Marie-Josée CrozeAnn | Ann |
 Peter StormareEditor | Editor |
 Patrick BauchauDad | Dad |
 Julia Sarah StoneMina | Mina |
 Lilah FitzgeraldYoung Mina | Young Mina |
 Robert NaylorChristopher | Christopher |
 Jack FultonChristopher 5-8 yrs old | Christopher 5-8 yrs old |
 Céline BonnierPolice Officer | Police Officer |
 Peter MillerFisherman | Fisherman |
 Martin SimsPoliceman | Policeman |
 Anne-Sophie BozonNurse F. Simard | Nurse F. Simard |
 Philippe Vanasse-PaquetChristopher (12 yrs old) | Christopher (12 yrs old) |
| JJessy GagnonMina 3 yrs old | Mina 3 yrs old |
| DDiane ArsonClarissa (uncredited) | Clarissa (uncredited) |
| RRachelle BergeronConcert attendee (uncredited) | Concert attendee (uncredited) |
 Benoit PriestCircus Cook (uncredited) | Circus Cook (uncredited) |
| NNathaly ThibaultMother with children (Amusement Park) (uncredited) | Mother with children (Amusement Park) (uncredited) |
| GGilbert WahiakeronIce Fishing Man #2 | Ice Fishing Man #2 |
| CClaude ChamberlainIce Fishing Man #3 | Ice Fishing Man #3 |
| MMary Katherine HarveySocial Worker Woman | Social Worker Woman |
 Jane WheelerWoman in Park | Woman in Park |
| RRenaud LabelleDark Haired Boy | Dark Haired Boy |
 Patrick WatsonMusician on Stage: lead vocals / piano | Musician on Stage: lead vocals / piano |
| AAnnie GadboisMusician on Stage: cello | Musician on Stage: cello |
| LLigia PaquinMusician on Stage: alto | Musician on Stage: alto |
| EEmilie RabaroanaMusician on Stage: violin | Musician on Stage: violin |
 Mélanie VaugeoisMusician on Stage: violin | Musician on Stage: violin |
