Professor Winckler
Commissioner Calas
Hélène Ardouin
André Laurent
Barmaid
Winckler's assistant
Barmaid
Calas's secretary
Kretz, Winckler's henchman
John Gordon
Jojo, Dany's friend
Gérard
First inspector
Second inspector
Gordon's Mistress
Dany
Jazz conductor
Singer of the orchestra