| 角色 | 饰演者 | 角色介绍 |
| James Kennedy | 卡梅隆·米切尔 | |
| Inspector Hazelrigg | 马留斯·戈尔林 | |
| Feist | 哈里·H·考伯特 | |
| Helen Kennedy | 露易丝·麦斯威尔 | |
| Jimmy Kennedy | Denis Gilmore | |
| Sgt. Plummer | Humphrey Lestocq | |
| Pat Delaney | Ann Sears | |
| Rocky | Timothy Bateson | |
| Benny | Kenneth Cope | |
| Moonlight Jackson | Brian Rawlinson | |
| Casey | Tony Quinn | |
| Alan | Tony Doonan | |
| Milly | Susan Denny | |
| May | Jean Marlow | |
| Lewis | Edward Harkey | |
| Lab Assistant | Emrys Leyshon | |
| T.V. Interviewer | Tony Hawes | |
| Station Constable | Alan Edwards | |
| Reporter | John Baker | |
| Doorman | Don Auld |
