| John Ireland | ... | John Hunter | |
| Robert Ayres | ... | Walter Allen | |
| rest of cast listed alphabetically: | |||
| Michael Balfour | ... | Freddy | |
| Robert Dorning | ... | Mr. Cuthbert | |
| Ann Hanslip | ... | Walter Allen's Secretary | |
| Anton Rodgers | ... | Barman | |
| Kevin Stoney | |||
| John Stuart | ... | Inspector | |
| Episode Crew |
Directed by | |||
| Bill Lewthwaite | |||
Writing credits(in alphabetical order) | ||
| Brian Clemens | writer | |
| David Nicholl | writer | |
Produced by | |||
| Edward J. Danziger | .... | producer | |
| Harry Lee Danziger | .... | producer | |
Cinematography by | |||
| Walter J. Harvey | (director of photography) (as Jimmy Harvey) | ||
Production Management | |||
| Brian Taylor | .... | production supervisor | |
Music Department | |||
| Bill LeSage | .... | composer: main title theme | |
| Bill LeSage | .... | performer: main title theme | |
| Ronnie Ross | .... | musician (uncredited) | |
| Main series | Episode guide | Full cast and crew |
| Company credits | IMDb TV section | IMDb Mystery section |