| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Anthony Hope | Crew | Writing | Novel | 6 |
 Barry Letts | Crew | Production | Producer, Creator | 6 |
 Ken Trew | Crew | Costume & Make-Up | Costume Design | 6 |
Leonard Lewis | Crew | Directing | Director | 6 |
James Andrew Hall | Crew | Writing | Adaptation | 6 |
Elizabeth Rowell | Crew | Costume & Make-Up | Makeup Artist | 6 |
 Terrance Dicks | Crew | Writing | Script Editor | 6 |
Paul Lewis | Crew | Sound | Music | 6 |
Benjamin Feitelson | Cast | Actor | De Gautet | 4 |
 Derek Ware | Cast | Actor | Sergeant | 3 |
 Gabriel Woolf | Cast | Actor | Cardinal Archbishop of Streisau | 1 |
 Gary Waldhorn | Cast | Actor | Smithers | 1 |
 George Irving | Cast | Actor | Michael, Duke of Streisau ('Black Michael') | 5 |
 George Waring | Cast | Actor | Prefect of Police | 3 |
Gordon Salkilld | Cast | Actor | Second Customs Official | 1 |
John Moore | Cast | Actor | Josef | 3 |
 John Woodvine | Cast | Actor | Colonel Sapt | 6 |
 Jonathan Oliver | Cast | Actor | Freyler | 1 |
 Jonathon Morris | Cast | Actor | Rupert of Hentzau | 6 |
Lucien Morgan | Cast | Actor | Lt. Fritz Von Hartheim (uncredited) | 1 |
 Malcolm Sinclair | Cast | Actor | Rudolf Rassendyll / King Rudolf V | 6 |
 Nicholas Gecks | Cast | Actor | Fritz von Tarlenheim | 6 |
 Pauline Moran | Cast | Actress | Antoinette de Mauban | 6 |
Peggy Shields | Cast | Actress | Frau Holf | 6 |
 Peter Copley | Cast | Actor | Marshal Strakencz | 2 |
 Victoria Wicks | Cast | Actress | Princess Flavia | 5 |
Robin Bowerman | Cast | Actor | Johann | 2 |
 Graham Turner | Cast | Actor | First Customs Official | 1 |
 Elaine Ford | Cast | Actress | Peasant Girl | 1 |
David Landberg | Cast | Actor | Bersonin | 4 |
Gerald Blackmore | Cast | Herald | 1 | |
Clyde Gatell | Cast | Actor | Krafstein | 5 |
Clyde Gabell | Cast | Krafstein | 6 | |
John White | Cast | Actor | Station master | 6 |
James Richardson | Cast | Actor | Soldier | 2 |
 Robin Langford | Cast | Actor | Detchard | 5 |
Michael Eriera | Cast | Lauengram | 3 | |
| Person | Type | Job | Role(s) | Episodes |
