 | Amanda Seyfried als Chloe Sweeney |
 | Julianne Moore als Catherine Stewart |
 | Liam Neeson als David Stewart |
 | Max Thieriot als Michael Stewart |
 | R. H. Thomson als Frank |
 | Nina Dobrev als Anna |
 | Mishu Vellani als Receptionist |
 | Julie Khaner als Bimsy |
 | Laura de Carteret als Alicia |
 | Tiffany Lyndall-Knight als Trina |
 | Meghan Heffern als Miranda |
 | Arlene Duncan als Party Guest |
 | Tamsen McDonough als Waitress 1 |
 | Kathryn Kriitmaa als Waitress 2 |
 | Adam Waxman als Bartender |
 | Natalie Lisinska als Eliza |
 | Krysta Carter als Young Co-Ed |
 | Severn Thompson als Nurse |
 | David Reale als Student 1 |
 | Milton Barnes als Student 2 |
 | Kathy Maloney als Student 3 |
 | Sean Orr als Chloe's Client #1 |
 | Paul Essiembre als Chloe's Client #2 |
 | Rod Wilson als Chloe's Client #3 |
 | Sarah Casselman als Orals Student |
| Kyla Tingley als Woman behind bar |
| Riley Jones als Stunt Hockey Player |
| David Gustav Fraser als Rivoli Patron |
 | Adam Christie als Student (uncredited) |
 | Rosalba Martinni als Maria (uncredited) |
| Atom Egoyan | Director |
| Ivan Reitman | Producer |
| Mychael Danna | Original Music Composer |
| Susan Shipton | Editor |
| Steve Munro | Sound Designer |
| Jan Rudy | Sound Re-Recording Mixer |
| Erin Cressida Wilson | Screenplay |
| Jeffrey Clifford | Producer |
| Joe Medjuck | Producer |
| Olivier Courson | Executive Producer |
| Daniel Dubiecki | Executive Producer |
| Ron Halpern | Executive Producer |
| Tom Pollock | Executive Producer |
| Jason Reitman | Executive Producer |
| Stephen Traynor | Line Producer |
| Paul Sarossy | Director of Photography |
| Joanna Colbert | Casting |
| Rich Mento | Casting |
| Phillip Barker | Production Design |
| Debra Hanson | Costume Design |
| Alison Reid | Stunt Coordinator |
| Dana Jones | Stunt Double |
| Jennifer Vey | Stunt Double |
| Anne Fontaine | Original Film Writer |
| Simone Urdl | Co-Producer |
| Jennifer Weiss | Co-Producer |
| Ali Bell | Associate Producer |
| Erin Cressida Wilson | Associate Producer |
| Jim Lambie | Set Decoration |
| Kim McQuiston | Art Direction |
| Diane Mazur | Makeup Artist |
| Suzanne Benoit | Makeup Artist |
| Suzanne Benoit | Hairstylist |
| Susan Reilly LeHane | Makeup Artist |
| Ryan Reed | Hairstylist |
| Ava Stone | Makeup Artist |
| Josie Stewart | Hairstylist |
| Richard Black | Second Assistant Director |
| Daniel J. Murphy | First Assistant Director |
| Robert Crowther | Visual Effects Supervisor |
| Riley Jones | Stunts |
| Curtis Parker | Stunts |
| JP Locherer | Second Unit Director of Photography |
