| 角色 | 饰演者介绍 |
| Franklyn Marsh | 克里斯托弗·李 |
| Dr. Blake | Max Adrian |
| Ann Rogers | Ann Bell |
| Eric Landor | 迈克尔·高夫 |
| Nicolle | Jennifer Jayne |
| Jim Dawson | Neil McCallum |
| Hopkins | 伯纳德·李 |
| Biff Bailey | Roy Castle |
| Dr. Sandor Schreck | 彼得·库欣 |
| Bill Rogers | Alan Freeman |
| Caleb | Peter Madden |
| Sammy Coin | Kenny Lynch |
| Drake | 杰瑞米·坎普 |
| Bob Carroll | 唐纳德·萨瑟兰 |
| Shine | Harold Lang |
| Deirdre Biddulph | Ursula Howells |
| Vrim | Christopher Carlos |
| Valda | Katy Wild |
| Tod | Edward Underdown |
| Carol Rogers (as Sarah Nicholls) | Phoebe Nicholls |
| Gallery Owner | Isla Blair |
| Detective | Al Mulock |
| Nurse | Judy Cornwell |
| Surgeon | Hedger Wallace |
| Lady in Art Gallery | Faith Kent |
| Small Man in Public House | Kenneth Kove |
| Toastmaster | Frank Forsyth |
| Dambala | Thomas Baptiste |
| Member of Bailey's band | Tubby Hayes |
| Steel Band Leader (uncredited) | Russ Henderson |
