- Unknown:
- Rodney Ackland
- Adapted By:
- Mollie Greenhalgh
- Unknown:
- Michael Hordern
- Unknown:
- Gwen Nelson
- Pianist:
- Josephine Lee
- Unknown:
- Philip Jones
- Produced By:
- Archie Campbell
- Frederick S Dyson, an insurance agent:
- Michael Hordern
- Margaret Dyson, his wife:
- Gwen Nelson
- Peggy Dyson (aged fifteen), his daughter:
- Heather Kyd
- Pa Dyson, his father:
- Wilfred Babbage
- Archie Gooch, his clerk:
- Nigel Anthony
- Maria Lummus, the Dysons' tenant:
- Patience Collier
- Alfie (aged ten), her adopted son:
- David Scully
- Bert Vokes, her cousin:
- John Bryning
- Emily Vokes, his wife:
- Gudrun Ure
- Mrs Culff:
- Shela Ward
- Henrietta Spicer, the Dysons' maid servant:
- Rosamund Greenwood
- Stacey Crispin:
- Hugh Dickson
- Harry Bowles:
- Anthony Viccars
- Sir Arthur Lovecraft, K C:
- David Bird
- Detective-Inspector Ward:
- Derek Blomfleld
