 | Donald Sumpter als Donald Neilson |
 | Debbie Farrington als Lesley Whittle |
 | Marjorie Yates als Neilson's Wife |
 | Sylvia O'Donnell als Neilson's Daughter |
 | Andrew Burt als Lesley's Brother |
| Alison Key als Lesley's Sister-in-Law |
 | Ruth Dunning als Lesley's Mother |
| David Swift als Det. Chief Superintendent |
| Michael Barrington |
 | Lila Kaye |
| Delia Paton |
| Edwin Apps |
 | Gerry Sundquist |
 | Ruth Kettlewell |
 | Graham Ashley |
| Brenda Cowling |
| Lyn McCarthy |
| Paul McCarthy |
 | Peter Copley |
 | Barbara New |
| Jack Galloway |
| Valerie Holliman |
| Paul Luty |
 | Richard Aylen |
| Charles Pemberton |
| John Eastham |
| Anthony Naylor |
| John Dixon |
| Christopher Holroyd |
| Loftus Burton |
| Joanne Leighton | Writer |
| Ian Merrick | Director |
| Michael Armstrong | Screenplay |
| Irene Lamb | Casting |
| Neville Smallwood | Makeup Artist |
| Stan Phillips | Sound Recordist |
| Carlotta Barrow | Art Direction |
| Jim Harris | Gaffer |
| Richard Arnell | Music |
| Teddy Darvas | Editor |
| Alan Jones | Camera Operator |
| Peter Long | Associate Producer |
| Joseph Mangine | Director of Photography |
| Ian Merrick | Producer |
| Jeanette Freeman | Hairstylist |
