Richard Pottier Director Albert Préjean Commissaire Jules Maigret Actor Suzy Prim Madame Petersen Actor Jacques Baumer Arthur Donge Actor Jean Marchat Petersen Actor Denise Grey Madame Van-Beil Actor André Gabriello Lucas Actor Gina Manès Ginette Actor René Génin Ramuel Actor Florelle Charlotte Donge Actor Denise Bosc Hélène Actor Gabrielle Fontan La vieille bonne Actor Georges Simenon Writer Charles Spaak Screenwriter Alfred Greven Producer