| 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 | |
