- Author:
- Georges Simenon
- Dramatised by:
- Elaine Morgan
- Designer:
- Eileen Diss
- Music composed by:
- Ron Grainer
- Film cameraman:
- Peter Hamilton
- Film editor:
- Jess Palmer
- Script editor:
- Donald Bull
- Producer:
- Andrew Osborn
- Director:
- Terence Dudley
- Chief Inspector Maigret:
- Rupert Davies
- Lucas:
- Ewen Solon
- Madame Maigret:
- Helen Shingler
- Lise:
- Lyn Ashley
- Dr Mandel:
- Paul Bacon
- Albert:
- Dyson Lovell
- Supt Jaminet:
- Raymond Mason
- Didine Gulot:
- Patricia Hayes
- Gulot:
- Edwin Finn
- Judge Forlacroix:
- Leslie French
- Marcel:
- Terence Bayler
- Policeman:
- Ray Roberts
- Photographer:
- David Baxter
- Therese:
- Audine Leith
- Hotel proprietor:
- Dennis Handby
- Estelle:
- Jean Leo
- Receptionist:
- Julie Paulle
