| 角色 | 饰演者 | 角色介绍 |
| John Emmett | 斯特林·海登 | |
| Ann Hemple Nicholson | 鲁思·罗曼 | |
| Dr. Frederick Simmons | Werner Klemperer | |
| Dean William Brant | Richard Gaines | |
| Edward Manning Kirkpatrick aka Kirk | Charles Davis | |
| Helen Bethke RN | Jeanne Cooper | |
| Karl Plesser | Peter Hansen | |
| Dr. Reinhart Kissel (as Karl Lindt) | Karl Ludwig Lindt | |
| Bud Deputy Sheriff | John Mitchum | |
| Sheriff | John Frederick | |
| Collision Shop Owner (uncredited) | Leonard Bremen | |
| Mechanic (uncredited) | Sidney Clute | |
| FBI Agent Jim Anderson (uncredited) | Ken Curtis | |
| Motel Owner (uncredited) | Harry Hines | |
| Man from Sanitarium (uncredited) | Tom McKee |
