- Author:
- George R. Preedy
- Adapted by:
- Duncan Ross
- Designer:
- Stephen Taylor
- Producer:
- Rudolph Cartier
- Captain Banner, Governor of the Fortress:
- David Farrar
- Pastor Andreas Garrison Chaplain:
- George Coulouris
- Katrine, a peasant girl:
- Jeanette Sterke
- Baron Molde, Secretary of State:
- Andrew Cruickshank
- Sentry:
- Harry Lane
- Sergeant Ericsson:
- Michael Brennan
- Caroline Sophia, Queen of Denmark and Norway:
- Faith Brook
- Baroness von Bernstorf, Lady-in-Waiting:
- Mary Clare
- First prisoner:
- Sydney Bromley
- Second prisoner:
- John Miller
- Third prisoner:
- George Herbert
- Guard:
- Charles Price
