Cast in order of appearance
| Black Michael | Nicholas Gecks |
| Colonel Sapt | Michael Cronin |
| Prince Rudolph | David Haig |
| Fritz von Tarlenheim | Tom Bowles |
| Rudolph Rassendyll | David Haig |
| Harry | Duncan Berkshire David Wilson |
| Earl of Burlesdon | Timothy Block |
| Rupert of Hentzau | Mark Lockyer |
| Child at station | Duncan Berkshire David Wilson |
| Father at station | Alan Cheeseman |
| Secret Policeman | Nicholas Hall |
| Antoinette de Mauban | Melanie Jessop |
| Princess Flavia | Leonie Mellinger |
| Johann | Timothy Block |
| Josef | Nicholas Hall |
| Marshal Strakencz | Alan Cheeseman |
| Edward VII Prince of Wales | Timothy Block |
| Detchard | Nicholas Hall |
| Bersonin | Timothy Block |
| Station Master | Alan Cheeseman |