Heinz Rühmann as Kommissar Maigret

Françoise Prévost as Simone

Eddi Arent as Francois Labas

Ulli Lommel as René Delfosse

Günter Strack as Kommissar Delvigne

Giacomo Furia as Marcello Genaro

Günther Stoll as Alain Robin

Günther Ungeheuer as Mr. Holoway

Gerd Vespermann as Inspektor Caselle

Edwin Noël as Jean

Alexander Kerst as André Delfosse

Christo Neggas as Adriano Genaro

Claudio Camaso as Giorgio Genaro

Francesca Rosano as Franchita

Peter Groß as Inspektor Lapointe

Silvana Sansoni as Animierdame

Peter Gerhard as Museumsdirektor

Rudolf Barry as Inspektor Lucas

Gerhard Koska as

Walter Varndal as Bauchladenmann