Maigret investigates the murder of a philandering businessman found dead in an apartment building full of colorful tenants.
| Directing | Renato De Maria | Director |
| Writing | Georges Simenon | Novel |
| Sound | Nicola Piovani | Original Music Composer |
| Camera | Gian Filippo Corticelli | Director of Photography |
| Editing | Patrizio Marone | Editor |
| Art | Francesco Frigeri | Production Design |
| Costume & Make-Up | Elisabetta Montaldo | Costume Design |
| Costume & Make-Up | Esmé Sciaroni | Makeup Department Head |
| Costume & Make-Up | Mauro Tamagnini | Hair Department Head |
| Writing | Francesco Scardamaglia | Teleplay |
| Writing | Nicola Lusuardi | Teleplay |
| Writing | Sergio Castellitto | Teleplay |
| Production | Roberto Sessa | Producer |
| Production | Fabiola Banzi | Casting |
| Production | Alena Kubánková | Casting |
| Production | Núria Vilert | Casting |
| Writing | Nicola Lusuardi | Story |
| Writing | Sergio Castellitto | Story |
| Writing | Francesco Scardamaglia | Story |
| Sound | Mario Iaquone | Sound |
| Directing | Gianluca Mazzella | Assistant Director |
| Production | Patrick Carrarin | General Manager |
| Production | Claudia Marra | Delegated Producer |
| Writing | Giorgio Fabbri | Story Editor |
| Production | Aureli De Luna | Co-Producer |
| Production | Ornella Bernabei | Co-Producer |
| Production | Anna Stoppoloni | Co-Producer |
| Production | Massimo Chiesa | Associate Producer |