| 角色 | 饰演者 | 角色介绍 |
| Alexander Graham Bell | John Bach | |
| Melville | 伊安·邦纳 | |
| Eliza | 布兰达·弗里克 | |
| Sumner Tainter | Jim McLarty | |
| Charles Thompson (as Dwight Peter Bacquie) | Dwight Bacquie | |
| Glenn Curtiss | 劳伦斯·贝恩 | |
| Thomas Watson | Francis Bell | |
| Helen Keller | Rhondee Beriault | |
| Elisha Gray | Ken Blackburn | |
| Dr. Clarence Blake | Alistair Browning | |
| William Orton | Gerald Bryan | |
| Tamblyn | Patrick Brymer | |
| Daisy | Melissa Cassin | |
| Susanna Hall | Clare Corridan | |
| Casey Baldwin | 亨利·科泽尼 | |
| Samuel Langley | Colin Fox | |
| Edward Gallaudet | John Givins | |
| Elsie Bell | Cindy Marie Gorman | |
| Chauncy Smith | Tony Groser | |
| Sarah Fuller | Yvonne Lawley | |
| Arthur McCurdy | Dan MacDonald | |
| Maude | Joanne MacInnes | |
| Miss Sullivan | Alena McDonald | |
| Bert Grosvenor | Michael McManus | |
| John Fowler | Peter Nicoll | |
| Douglas McCurdy | 乔纳森·鲍茨 | |
| Mabel Bell | Elizabeth Quinn | |
| Melville Bell | Timothy Raby | |
| Captain Keller | Lewis Rowe | |
| Mrs. Bethune | Carole Sinclair | |
| Gardiner Hubbard | 杰弗里·托马斯 | |
| President Garfield | Ian Watkin |
