- Author:
- Dorothy L. Sayers
- Producer:
- Richard Beynon
- Director:
- Ronald Wilson
- Lord Peter:
- Ian Carmichael
- Mr Murbles:
- John Welsh
- Ann Dorland:
- Anna Cropper
- Mr Pritchard:
- Clifford Rose
- Nellie Mason:
- Celestine Randall
- George Fentiman:
- John Quentin
- Robert Fentiman:
- Terence Alexander
- Sheila Fentiman:
- Vivien Heilbron
- Clerk:
- John Scott-Martin
- Det-Insp Parker:
- Mark Eden
- Hinkins:
- John Tordoff
- Bunter:
- Derek Newark
- Marjorie Phelps:
- Phyllida Law
- Head Waiter:
- John Devaut
- Detective:
- Brian Murphy
- Second detective:
- Pat Gorman
- Mr Oliver:
- Carleton Hobbs
- Railway official:
- Alan Lawrance
- Agitated lady:
- Elizabeth Stewart
- Dr Penberthy:
- Donald Pickering
- Dr Horner:
- Norman Shelley
