- Simone Corrente
- Â Luca Benvenuto / ... 184 episodes, 2000-2010
- Gianni Ferreri
- Â Sovrintendente Giuseppe Ingargiola / ... 181 episodes, 2000-2010
- Roberto Nobile
- Â Sovrintendentecapo Antonio Parmesan / ... 180 episodes, 2000-2008
- Ricky Memphis
- Â Ispettore capo Mauro Belli / ... 136 episodes, 2000-2006
- Giorgio Tirabassi
- Â Roberto Ardenzi 112 episodes, 2000-2007
- Claudia Pandolfi
- Â Commissario Giulia Corsi / ... 80 episodes, 2002-2010
- Daniela Morozzi
- Â Vittoria Guerra / ... 73 episodes, 2000-2010
- Marco Marzocca
- Â Ugo Lombardi 71 episodes, 2000-2008
- Lucia Rossi
- Â Miriam 52 episodes, 2008-2009
- Giusy Ricchizzi
- Â Antonella Gullo 52 episodes, 2008-2009
- Dino Abbrescia
- Â Ispettore Antonio Sperelli 52 episodes, 2010-2012
- Gianluca Bazzoli
- Â Giovanni Brenta 52 episodes, 2010-2012
- Lorenzo Flaherty
- Â Ispettore Walter Manrico / ... 49 episodes, 2000-2008
- Isabella Ferrari
- Â Giovanna Scalise 47 episodes, 2000-2005
- Flavio Parenti
- Â Gabriele Mancini 46 episodes, 2009-2010
- Giorgio Pasotti
- Â Ispettore Paolo Libero 42 episodes, 2002-2005
- Enrico Silvestrin
- Â Alessandro Berti 38 episodes, 2006-2008
- Sergio Fiorentini
- Â Tiberio Belli 35 episodes, 2000-2007
- Tommaso Ragno
- Â Antonio Corallo 27 episodes, 2001-2012
- Giampaolo Morelli
- Â Davide Rea 26 episodes, 2005
- Carlotta Natoli
- Â Angela Rivalta 26 episodes, 2000-2001
- Augusto Zucchi
- Â Sostituto Procuratore DiFrancesco 26 episodes, 2000-2002
- Franco Trevisi
- Â Corradi 26 episodes, 2007
- Rodolfo Corsato
- Â Dorian Lazslo 26 episodes, 2009
- Yorgo Voyagis
- Â Avvocato Balsamo 26 episodes, 2010
- Miriam Leone
- Â Mara Fermi 26 episodes, 2011-2012
- Valentina Cervi
- Â Valentina Bini 26 episodes, 2011-2012
- Maria Sole Mansutti
- Â Agente Marta Balestra 26 episodes, 2011-2012
- Serena Bonanno
- Â Nina Moretti 25 episodes, 2000
- Ivana Monti
- Â Caterina Scalise 25 episodes, 2000-2001
- Soraya Castillo
- Â Paula Cardozo 25 episodes, 2000-2001
- Lavinia Guglielman
- Â Livia Scalise 25 episodes, 2000-2001
- Alessandro Sperduti
- Â Federico Scalise 25 episodes, 2000-2001
- Paolo Maria Scalondro
- Â Arturo Stasi 24 episodes, 2000
- Paolo Romano
- Â Mario 24 episodes, 2001
- Emiliano Coltorti
- Â Giulio Flaviano 23 episodes, 2008
- Michela Andreozzi
- Â Sofia Ingargiola 18 episodes, 2009
- Max Giusti
- Â Ispettore Raffaele Marchetti / ... 14 episodes, 2007-2008
- Giulia Bevilacqua
- Â Anna Gori / ... 12 episodes, 2005-2009
- Tony Sperandeo
- Â Vito Tonnara 11 episodes, 2001
- Massimo Dapporto
- Â Commissario Marcello Fontana / ... 11 episodes, 2007
- Antonio Ianiello
- Â Ruggero Carrano 11 episodes, 2006
- Valeria Milillo
- Â Francesca Volta 10 episodes, 2002-2006
- Silvia De Santis
- Â Germana Belli 8 episodes, 2002-2007
- Antonino Bruschetta
- Â Marco Gallo 8 episodes, 2005-2012
- Francesca Inaudi
- Â Irene Valli / ... 7 episodes, 2006-2008
- Giulia Michelini
- Â Sabina Corsi 6 episodes, 2002-2005
- Bruno Armando
- Â Marco Altieri 6 episodes, 2002-2005
- Francesca Graglia
- Â Policewoman 6 episodes, 2012
- Massimiliano Vado
- Â Medico Legale 5 episodes, 2005
- Anna Foglietta
- Â Ispettore Elena Argenti / ... 5 episodes, 2007-2009
- Roberto Citran
- Â Fernando Monti 4 episodes, 2001-2002
- Nino D'Agata
- Â Vicequestore Severini 4 episodes, 2002
- Andrea Beretta
- Â Daniele Montanari 4 episodes, 2011
- Giordano Petri
- Â Angelo Roberti 4 episodes, 2012
- Roberto Zibetti
- Â Luigi 3 episodes, 2001
- Michele Riondino
- Â Daniele Fanelli 3 episodes, 2002-2005
- Antonio Zavatteri
- Â Commissario Evangelisti / ... 3 episodes, 2003-2009
- Bruno Pavoncello
- Â Giuliani / ... 3 episodes, 2005-2010
- Filippo Valsecchi
- Â Stefano 3 episodes, 2006-2007
- Marco Rulli
- Â Cristian 3 episodes, 2006
- Patrizio Pelizzi
- Â Artificiere della polizia Lince / ... 3 episodes, 2007-2010
- Claudio Alfonsi
- Â Ispettore 3 episodes, 2007-2010
- Giorgio Colangeli
- Â Boss vincenzo neri 3 episodes, 2007
- Emanuela Postacchini
- Â Andra 3 episodes, 2011
- Cristina Moglia
- Â Valeria Ruggero 2 episodes, 2001-2002
- Barbara Cupisti
- Â Irene Martini 2 episodes, 2001-2002
- Ludovico Fremont
- Â Andrea Muralti / ... 2 episodes, 2000-2002
- Mario Opinato
- Â Gaetano Nazzari / ... 2 episodes, 2005-2007
- Elisabetta Rocchetti
- Â Girl 2 episodes, 2001-2002
- Vincenzo Tanassi
- Â Carlo Ratti / ... 2 episodes, 2000-2007
- Flavio Insinna
- Â Luigi Falliero 2 episodes, 2000
- Max Mazzotta
- Â Abductor Giorgio Brioschi / ... 2 episodes, 2000
- Ginevra Colonna
- Â Letizia 2 episodes, 2000
- Alessandra Vanzi
- Â Marisa Spanu 2 episodes, 2000
- Giampiero Lisarelli
- Â Andrea Manzi 2 episodes, 2000
- Francesca De Martini
- Â Prot di puntata 2 episodes, 2001-2005
- Fabrizio Buompastore
- Â Assassino 2 episodes, 2002-2006
- Kastriot Shehi
- Â Darko / ... 2 episodes, 2005-2007
- Chiara Mastalli
- Â Elisa 2 episodes, 2005
- Stefano Fregni
- Â Albergatore / ... 2 episodes, 2006-2008
- Vittorio Amandola
- Â Mario Ferri (Travestito) 2 episodes, 2006
- Ettore D'Alessandro
- Â Jonathan Sidoti / ... 2 episodes, 2007-2011
- Giampiero Mancini
- Â Alberto Tebaldi / ... 2 episodes, 2007-2008
- Robert Madison
- Â Walter Martino 2 episodes, 2007
- Andrea Sartoretti
- Â Federico Bergamini 2 episodes, 2008
- Isabelle Adriani
- Â Carolina Ferretti 2 episodes, 2009-2011
- Fabrizio Traversa
- Â Salvati / ... 2 episodes, 2009-2011
- Alberto Albertino
- Â Michele Dardini / ... 2 episodes, 2009-2010
- Romuald Andrzej Klos
- Â Pope 2 episodes, 2009
- Luigi Toto
- Â Agente P.S. Ferrari / ... 2 episodes, 2010-2011
- Mauro Stroppa
- Â Vico, il serbo / ... 2 episodes, 2010-2011
- Massimo Bonetti
- Â Rocco Liverani 2 episodes, 2011
- Anna Maria Malipiero
- Â Rita 2 episodes, 2011
- Eros Conforti
- Â Blaster 2 episodes, 2012
- Sara Tommasi
- Â Prostitute 1 episode, 2010
- Sergio Albelli
- Â Alessandro Bonacci 1 episode, 2005
- Stefania Orsola Garello
- Â Carla Monti 1 episode, 2002
- Raoul Bova
- Â Ferdinando 1 episode, 2000
- Luca Calvani
- Â Fabio 1 episode, 2000
- Milutin Dapcevic
- Â Sinisa Davric 1 episode, 2000
- Edoardo Costa
- Â Bit Part 1 episode, 2000
- Rosa Pianeta
- Â Giulia 1 episode, 2000
- Roberto De Francesco
- Â Longoni 1 episode, 2000
- Pietro Delle Piane
- Â Capo Usurai 1 episode, 2000
- Valentina Sperlì
- Â Lucia 1 episode, 2000
- Claudio De Davide
- Â Alfonso Perelli 1 episode, 2000
- Stefano Venturi
- Â Alfredo Verrecchia 1 episode, 2000
- Diana Anselmo
- Â Ludovica 1 episode, 2000
- Lily Tirinnanzi
- Â Prima cassiera 1 episode, 2000
- Edoardo Romano
- Â Gargiulo Gennaro 1 episode, 2000
- Gea Lionello
- Â Swindled Woman 1 episode, 2000
- Carlo Marchetti
- Â Matteo 1 episode, 2000
- Gianfranco Amato
- Â Antonino 'Roscio' Michelini 1 episode, 2000
- Anna Marcello
- Â Isabella 1 episode, 2001
- Ugo Conti
- Â Mago 1 episode, 2001
- Cristiano Brogani
- Â Fattorino 1 episode, 2001
- Frank Crudele
- Â Giovanni 1 episode, 2002
- Bianca Nappi
- Â Anita 1 episode, 2002
- Andrea Tidona
- Â Proprietario Dell'officina 1 episode, 2002
- Willy Stella
- Â Rapinatore di Banca 1 episode, 2002
- Manuela Abrugia
- Â Angela 1 episode, 2002
- Cristiana Esposito
- Â Studentessa liceo classe Sabina 1 episode, 2002
- Alexia Murray
- Â Marzia 1 episode, 2003
- Alessia Franchin
- Â Amelia 1 episode, 2003
- Francesca Faiella
- Â Gioielliera 1 episode, 2003
- Walter D'Errico
- Â Minister 1 episode, 2003
- Alberto Basaluzzo
- Â Sergio Moresco 1 episode, 2003
- Fiodor Passeo
- Â Spacciatore 1 episode, 2003
- Natale Stefani
- Â Gestore Internet 1 episode, 2003
- Andrea Bruschi
- Â Il biondino 1 episode, 2005
- Marco Rossetti
- Â Carlo Rondelli 1 episode, 2005
- Diego Guerra
- Â Chicco 1 episode, 2005
- Gualtiero Scola
- Â Episode guest 1 episode, 2005
- Damiano Russo
- Â Ivano Frattini 1 episode, 2005
- Federico Torre
- Â Ricci 1 episode, 2005
- Luciano de Luca
- Â Alberto Campi 1 episode, 2005
- Alessandro Borghi
- Â Martino Benzi 1 episode, 2006
- Federico Scribani
- Â Renato Aletti 1 episode, 2006
- Carlotta Montanari
- Â Guest star / ... 1 episode, 2006
- Elena Cucci
- Â Nicoletta 1 episode, 2006
- Massimo Venturiello
- Â Cesare Carrano 1 episode, 2006
- Crisula Stafida
- Â Vanessa 1 episode, 2006
- Giuseppe Gandini
- Â Avvocato Grimaldi 1 episode, 2006
- Martina Pinto
- Â Silvia 1 episode, 2006
- Fernando Cormick
- Â Felipe 1 episode, 2006
- Laura Marinoni
- Â PM Forti 1 episode, 2006
- Rodolfo Castagna
- Â Marzio Benedetti 1 episode, 2006
- Bruno Del Turco
- Â Dario Pellegrini 1 episode, 2006
- Daniele Blando
- Â Leandro Sertori 1 episode, 2006
- Maurizio Di Meo
- Â Giorgio 1 episode, 2006
- Alessia Barela
- Â Valeria Valli 1 episode, 2007
- Lia Gotti
- Â Sonia 1 episode, 2007
- Daniela Giordano
- Â Cristina Fontana 1 episode, 2007
- Antonello Annunziata
- Â Italo Caminiti 1 episode, 2007
- Giulio Pampiglione
- Â Piergiorgio Malaspina 1 episode, 2007
- Marco Iannitello
- Â Ernesto Guarini 1 episode, 2007
- Carolina Felline
- Â Laura 1 episode, 2007
- Daniela Zanchini
- Â Marinella Regini 1 episode, 2007
- Massimo Tellini
- Â Franco Binetti 1 episode, 2007
- Stefano Guglielmi
- Â Matteo Fontana 1 episode, 2007
- Rosanna Banfi
- Â Ludovica Barbieri 1 episode, 2008
- Majlinda Agaj
- Â Maddalena 1 episode, 2008
- Cosetta Turco
- Â Roberta 1 episode, 2008
- Adelmo Togliani
- Â Gaetano Bardoni 1 episode, 2008
- Carmine Balducci
- Â Maurizio Bossa 1 episode, 2008
- Katia Greco
- Â Clara 1 episode, 2009
- Gabriele Galli
- Â Giovanni Corsi 1 episode, 2009
- Eleonora Bolla
- Â Barbara 1 episode, 2009
- Silvia Rubino
- Â Emma 1 episode, 2009
- Andrea Bonella
- Â Lorenzo 1 episode, 2009
- Simone Mariani
- Â Arturo Giacobelli 1 episode, 2009
- Greta Toldo
- Â Anna 1 episode, 2009
- Marianna De Rossi
- Â Laura Orsini 1 episode, 2009
- Marina Limosani
- Â Belinda 1 episode, 2009
- Cristina Rambaldi
- Â Grazia Ricciardelli 1 episode, 2010
- Daniele Perrone
- Â Postman 1 episode, 2010
- Tatiana Luter
- Â Kate Bradford 1 episode, 2010
- Fabio Massimo Bonini
- Â Sergio Biondi 1 episode, 2010
- Federico Mancini
- Â Piumino 1 episode, 2011
- Giulio Beranek
- Â Kalin 1 episode, 2011
- Gledis Cinque
- Â Asia Pinelli 1 episode, 2011
- Chiara Conti
- Â Lavinia 1 episode, 2011
- Claudio Masin
- Â Facci Ernesto 1 episode, 2011
- Claudio Nelli
- Â Bulletto 1 episode, 2011
- Daniele Nisi
- Â Gambler 1 episode, 2011
- Fabrizio Romagnoli
- Â Renato Spadoni 1 episode, 2011
- Bernard Bullen
- Â Antonio 1 episode, 2012
- Vito Napolitano
- Â Architetto Armando Somaini 1 episode, 2012
- Franco Bottone
- Â Senzatetto 1 episode, 2012
- Daniele Tittarelli
- Â Pilota auto 1 episode, 2018
- Jay Natelle
- Â William Prokas unknown episodes
- Giacomo Gonnella
- Â Tommaso Lodoli unknown episodes
- Fabio Camilli
- Â Vicequestore Roveda unknown episodes
- Giuseppe Cederna
- Â Luigi Greco unknown episodes
- Fabrizio Contri
- Â Prof. De Santis unknown episodes
- Claudio Ammendola
- Â Andrea Moretti unknown episodes
- Frida Bruno
- Â Laura, la ragazza di Saro unknown episodes
- Roberta Spagnuolo
- Â Diana Rinaldi unknown episodes
- Francesco Vitiello
- Â Corrado Esposito unknown episodes
- Pierluigi Coppola
- Â Ira Droskovicic unknown episodes
- Marta Mangiucca
- Â Hostage girl unknown episodes
- Simone Fulciniti
- Â Posini unknown episodes
- Vincenzo Crivello
- Â Rosario 'Saro' Giuncardi unknown episodes
- Giampiero Comanducci
- Â Thug (uncredited) 3 episodes, 2009-2011
- Umberto De Luca
- Â Police Officer / ... (uncredited) 2 episodes, 2006-2010
- Dejan Markoski
- Â Sargente Rosi (uncredited) 1 episode, 2001
- Clemente Ukmar
- Â Security Guard (uncredited) 1 episode, 2005
- Angelo Ragusa
- Â Inmate (uncredited) 1 episode, 2010
- Francesco Petrazzi
- Â Thug (uncredited) 1 episode, 2010
- Simona Borioni
- Â italiana Finance Guard's (uncredited) unknown episodes