In the fictional European country of Amalia, the political interests of the British, American and Communist espionage communities are explored. Eschewing the action formula of its ITV contemporaries, the series dealt more politically oriented plots such as defections to the west, awakening "sleeper" agents and the leaking of official secrets.
| Created By | John Gould | |
|---|---|---|
| Status | Ended | |
| Original Name | The Mask of Janus | |
| First Air Date | October 8, 1965 | |
| Last Air Date | December 17, 1965 | |
| Seasons | 1 | |
| Episodes | 11 | |
| Episode Runtime | 50min | |
| Language | English | |
| Original Language | English | |
| Production Countries | United Kingdom | |
| Production Companies | BBC | |
| Networks | BBC One | |