- Composed By:
- Anthony Smith-Masters
- Conducted By:
- Patrick Savill
- Production By:
- Douglas Cleverdon
- The Sibyl:
- Flora Robson
- The Traveller:
- Marius Goring
- Attilio:
- Robert Rietty
- Francesca:
- Gwen Cherrell
- The Younger Pliny:
- Malcolm Hayes
- Lucius:
- Neville Hartley
- Lucretia:
- Thea Wells
- Their daughter:
- Molly Lawson
- A slave:
- Peter Claughton
- An old man:
- Ernest Jay
- Judy:
- Eleanor Surmnerfield
- Margery:
- Denise Bryer
- Walter:
- Brian Haines
- Bill:
- Derek Hart
- MacBride:
- James McKechnie
- MacFarlane:
- John Laurie
- The Guide:
- Frank Duncan
- Silent Old Gentleman:
- Ronald Simpson
- Silent Old Lady:
- Edith Savile
- The Lizard:
- Carleton Hobbs
