During the annual Christmas gathering at the family home, the parents surprise their children by announcing their decision to move in with one of them and pass on the house.
Unfortunately the movie Dearest Relatives, Poisonous Relations is not yet available on HBO Max.
| Camera | Tani Canevari | Steadicam Operator |
| Directing | Mario Monicelli | Director |
| Writing | Carmine Amoroso | Story |
| Writing | Carmine Amoroso | Screenplay |
| Writing | Suso Cecchi d'Amico | Screenplay |
| Writing | Piero De Bernardi | Screenplay |
| Writing | Mario Monicelli | Screenplay |
| Camera | Franco Di Giacomo | Director of Photography |
| Art | Franco Velchi | Production Design |
| Costume & Make-Up | Lina Nerli Taviani | Costume Design |
| Production | Amanzio Todini | Casting |
| Editing | Ruggero Mastroianni | Editor |
| Production | Bruno Ridolfi | Production Coordinator |
| Production | Paolo Venditti | Production Supervisor |
| Production | Francesco Anniballi | Production Secretary |
| Production | Daniele Bellucci | Production Secretary |
| Production | Byron Pierotti | Production Secretary |
| Directing | Anna Antonelli | Second Assistant Director |
| Directing | Stefano Chiezzi | Script Supervisor |
| Camera | Roberto Brega | Camera Operator |
| Camera | Stefano Coletta | Camera Operator |
| Camera | Guido Chimatti | Assistant Camera |
| Camera | Vincenzo Marinese | Assistant Camera |
| Camera | Francesca D'Antoni | Second Assistant Camera |
| Camera | Lorenzo Tovoli | Second Assistant Camera |
| Sound | Mario Dallimonti | Sound |
| Sound | Roberto Petrozzi | Sound |
| Sound | Adriano Di Lorenzo | Boom Operator |
| Sound | Alfredo Petti | Boom Operator |
| Camera | Gianfranco Salis | Still Photographer |
| Camera | Zeno Colantoni | Still Photographer |
| Art | Livia Del Priore | Assistant Production Design |
| Costume & Make-Up | Maurizio Silvi | Makeup Artist |
| Costume & Make-Up | Maria Rizzo | Hairstylist |
| Costume & Make-Up | Francesco Nardi | Assistant Makeup Artist |
| Costume & Make-Up | Marina Marin | Assistant Hairstylist |
| Costume & Make-Up | Liliana Sotira | Assistant Costume Designer |
| Lighting | Valerio Garzia | Gaffer |
| Camera | Mauro Anzelotti | Key Grip |
| Editing | Gasperina Marani | Assistant Editor |
| Editing | Rita Polidori | Assistant Editor |
| Sound | Danilo Sterbini | Sound Mixer |
| Art | Franco Velchi | Set Decoration |
| Sound | Rudy De Cesaris | Music |
| Directing | Amanzio Todini | First Assistant Director |
| Production | Giovanni Di Clemente | Producer |
