| 角色 | 饰演者介绍 |
| Kevin | 詹姆斯·麦卡沃伊 |
| Casey | 安雅·泰勒-乔伊 |
| Dr. Fletcher | 贝蒂·巴克利 |
| Claire | 海莉·路·理查森 |
| Marcia | 杰西卡·苏拉 |
| Uncle John | 布拉德·威廉姆·亨克 |
| Hannah | 金·迪莱克特 |
| Academic Moderator | Line Van Wambeke |
| High-School Student | Maria Breyman |
| Cab Driver | Peter Patrikios |
| Dan at Next Table | Steven Dennis |
| Dr. Clerque | Jon Douglas Rainey |
| Zoo Goer | Jalina Mercado |
| Waiter | Matthew Nadu |
| Flower Kiosk Worker | Kash Goins |
| Party Guest | James Robinson Jr. |
| Policeman #1 | Nakia Dillard |
| Homeland Security Officer | LeRoy Wilson Jr. |
| Homeland Security | John Jillard Sr. |
| Young Casey | Izzie Coffey |
| EMT | John Mitchell |
| Traveler in the Station | Andrea Havens |
| Diner Patron | Barbara Edwards |
| Bar Patron | Robert Bizik |
| Businessman / Father | Matthew Bowerman |
| Female Paramedic | Julie Potter |
| Caseys Mother | Kelly Werkheiser |
| Geraldo | Junnie Lopez |
| Train Conductor | Shawn Gonzalez |
| Pedestrian | Aleksandra Svetlic.. |
| Zoo Worker | Michael J. Kraycik |
| Zoo Worker | Michelle Santiago |
| Party Guest | Corinne Costa |
| Boy in Park | Colin Campbell |
| Zoo Attendee | Michaela Bockarie |
| Restaurant Patron | Gary Ayash |
| Police Officer | Jeff Buckner |
| Restaurant and Mall Patron | Kerry Dutka |
| Detective | Vincent Riviezzo |
| Game Show Contestant | Dann Fink |
| Townsman | Jeffrey Mowery |
| Game Show Host | Bruce Winant |
| Caseys Father | Brian Gildea |
| Mall Shopper / Restaurant Patron | Laura Hart |
| Diner Patron | Arielle Ingrassia-.. |
