| Characters in order of appearance | ||
|---|---|---|
| Name | Nationality | Description |
| Krasnovik | Klovenian | A rising young politician |
| Marevski | Hungarian | A carpenter and mechanic |
| Pezuin | Klovenian | Proprietor of the Cafe Krischka |
| Joseph Wilkinson | English | Waiter in the Cafe Krischka |
| Otto von Armstadt | German | Departmental Chief of the Secret Service of the League of Nations in Eastern Europe |
| Pieter van der Vogt | Dutch | Agent of the League Secret Service |
| Marta Losch | Swiss | Agent of the League Secret Service |
| Slovenski | Hungarian | A professor of Natural Science |
| Moneskin | Klovenian | A mechanical engineer |
| Baron Zovescu | Klovenian | A politician |
| Baroness Zovescu | Klovenian | The Baron’s wife |
| Prince Karyl of Klovenia | Klovenian | Claimant to the throne of Klovenia |
| Read letter | Letter from Bassett Kendall to the Headmaster of West Downs |
|---|---|
| Act One | The Cafe Krischka in Budapest |
| Act Two | A room in Castle Driznov, Baron Zovescu’s country house, about five miles from Botreznik, the capital of Klovenia. October 14th 3 p.m. |
| Act Three | The same. October 14th, 8.30 p.m. |
The action of the play takes place in the year 1975 A.D.