- Author:
- Thomas Lovell Beddoes
- Adapted by:
- Christopher Hassall
- Producer:
- Felix Felton
- Music composed by:
- Leighton Lucas
- Hemunculus Mandrake, an alchemist's apprentice:
- Reginald Beckwith
- Thorwald, deputy governor of Munsterburg:
- Arthur Ridley
- Wolfram, son of the former Duke:
- John Laurie
- Isbrand, brother to Wolfram:
- Stephen Murray
- Melveric, Duke of Munsterburg:
- Robert Farquharson
- Ziba, an Arab servant:
- Esme Percy
- Siegfried, friend of Isbrand:
- Richard Carr
- Sibylla, beloved of Melveric and Wolfram:
- Margaret Vines
- Amala, daughter of Thorwald:
- Diana Maddox
- Kate tavern hostess of Ancona:
- Anna Korda
- Titmouse, assistant to Mandrake:
- Lionel Stevens
- Sons of Melveric - Athulf:
- Richard Longman
- Sons of Melveric - Adalmar:
- Martin Benson
- Mario, a conspirator:
- Patrick Troughton
- Reciter:
- Christopher Hassall
- Narrator:
- Ian Cooper
- Others taking part:
- Anthony Jacobs
- Others taking part:
- Malcolm Hayes
- Others taking part:
- David Enders
- Others taking part:
- Betty Baskcomb
- Others taking part:
- Christine Gant
