- Author:
- Douglas Sanderson
- Adapter/director:
- Terence Dudley
- Detective theme music composed by:
- John Addison
- Incidental music:
- Max Harris
- Script editor:
- Max Marquis
- Assistant:
- John Gould
- Designer:
- John Cooper
- Producer:
- David Goddard
- Maigret (Introduction):
- Rupert Davies
- Bob Race:
- Frank Lieberman
- Tony Fontaine:
- Lew Luton
- Eve Race:
- Barbara Shelley
- Jordan:
- Terence Holland
- Sam Alford:
- Martin Wyldeck
- Jeff Pastor:
- Laurence Dane
- At Kresnick:
- Frank Gatliff
- Charlie:
- Ray Roberts
- Serine:
- David Cargill
- Virginia Ferrer:
- Jeanne Mooor
- Mrs Fontaine:
- Sally Lahee
- Louis:
- Barry Shawzin
- Jose:
- Richard Montez
- June:
- Marcella Markham
- Ernie:
- George Little
- Smollet:
- Patrick Whyte
- Patrolman:
- Derek Murcott
- Also taking part/Casino Doorman:
- Clive Cazes
- Also taking part/Mexican:
- Norman Chancer
- Also taking part/Casino Manager:
- Ken Goodlett
- Also taking part/Telephone Supervisor:
- Patricia Leathern
- Also taking part/Miss Cleaver:
- Mary Ellen Ray
- Also taking part/Alford Manservant:
- Drew Russell