Maria, a provincial Polish girl, travels to Milan to pay her older sister Eva a surprise visit. The sisters haven't seen each other in seven years and Eva has changed a lot. She lives in a luxurious apartment and dresses in designer clothes. Although she pretends to be an interpreter, Eva is actually a call-girl and, one night, fails to return from an appointment. Maria enquires at the hotel where Eva last worked. Eva's body is soon found. The investigation is conducted by Inspector Messina, a trendy cop. Maria and Messina become an inseparable investigating team. Maria poses as a call-girl in order to reveal her sister's killer and they use mobile phones to keep in touch.
Unfortunately the movie Squillo is not yet available on HBO Max.
| Art | Tonino Zera | Production Design |
| Crew | Marco Stefanelli | Weapons Master |
| Production | Paola Mongini | Publicist |
| Production | Diana Di Michele | Administration |
| Directing | Martina Monicelli | Continuity |
| Sound | Marco Streccioni | Sound Recordist |
| Sound | Marco Streccioni | Sound Mixer |
| Sound | Gianluca Podio | Conductor |
| Sound | Natale Massara | Conductor |
| Editing | Roberto Gianandrea | Assistant Editor |
| Editing | Maria Gianandrea | Assistant Editor |
| Editing | Gianni Cerniglia | Color Timer |
| Costume & Make-Up | Carla Rita Pons | Seamstress |
| Costume & Make-Up | Immacolata Costanza | Seamstress |
| Costume & Make-Up | Patrizia Baiocchi | Assistant Costume Designer |
| Camera | Mario Tessarin | Key Grip |
| Camera | Franco Mele | Assistant Camera |
| Lighting | Piero Duccio Mascherpa | Gaffer |
| Camera | Vachi Mallaby | Steadicam Operator |
| Camera | Emilio Lari | Still Photographer |
| Camera | Giovanni Gebbia | Steadicam Operator |
| Camera | Simone De Rosa | Assistant Camera |
| Lighting | Domenico Cavaliere | Gaffer |
| Camera | Roberto Calvi | Camera Operator |
| Crew | Federica Della Martira | Stunts |
| Crew | Umberto De Luca | Stunts |
| Sound | Marco Streccioni | Sound Engineer |
| Sound | Domenico Pasqua Di Bisceglie | Sound |
| Sound | Brigitta Pasquadibisceglia | Boom Operator |
| Sound | Danilo Moroni | Sound Mixer |
| Sound | Massimo Anzellotti | Foley Artist |
| Art | Giuseppe Mancarella | Props |
| Art | Miriam Fischer | Assistant Production Design |
| Directing | Patrizia Schiatti | Second Assistant Director |
| Directing | Nicola De Orsola | Second Assistant Director |
| Directing | Ulla Bomser | First Assistant Director |
| Production | Marco Sanguinetti | Production Secretary |
| Production | Franco Mancarella | Production Manager |
| Production | Cinzia Leoni | Unit Manager |
| Production | Paolo La Torraca | Production Secretary |
| Costume & Make-Up | Emilio Romano | Hairstylist |
| Costume & Make-Up | Vincenzo Cavicchi | Hairstylist |
| Costume & Make-Up | Elena Barosi | Makeup Artist |
| Costume & Make-Up | Nicoletta Ercole | Costume Designer |
| Art | Gianni Ravagnani | Set Decoration |
| Editing | Sergio Montanari | Editor |
| Camera | Luigi Kuveiller | Director of Photography |
| Sound | Pino Donaggio | Original Music Composer |
| Production | Giovanni Di Clemente | Producer |
| Writing | Franco Ferrini | Story |
| Writing | Franco Ferrini | Screenplay |
| Writing | Enrico Vanzina | Story |
| Writing | Enrico Vanzina | Screenplay |
| Writing | Carlo Vanzina | Story |
| Writing | Carlo Vanzina | Screenplay |
| Directing | Carlo Vanzina | Director |
