Cast & crew
Puzzle (1978)
Directed by Gordon Hessler Written by Herbert Wright
Cast
| Peter Gwynne | Det. Sgt. Knox |
| Gerard Kennedy | Garrett |
| Kerry McGuire | Diana Carson |
| Ivar Kants | Det. Const. Gilbert |
| James Franciscus | Harry Scott |
| Wendy Hughes | Claudine Cunningham |
| Robert Helpmann | Shepherd |
| Max Meldrum | Williams |
| Shane Porteous | Rantz |
| Ken Goodlet | Det. Insp. Dixon |
| Sheila Kennelly | Mrs. Foster |
| Richard Gilbert | Wilkes |
| Alan Russell | Priest |
| Terry Jowett | Policeman at Suicide |
| Charles Pointon | Man in Lobby |
| Tony Barry | Det. Const. Langdon |
| Peter Armstrong | Heavy |
| Bill Buckle | Painter |
| Gordon Piper | Policeman in House |
| Caroline Davies | Bride |
Crew
| Lynn Bayonas | Associate Producer |
| Ronald A. Suppa | Co-Executive Producer |
| James Davern | Executive Producer |
| Preston Fischer | Executive Producer |
| Robert Klein | Executive Producer |
| Herbert Wright | Producer |
| Gordon Hessler | Director |
| Herbert Wright | Writer |