Tomas Milian
Nico Giraldi
Tomas Milian as the unconventional undercover cop with a pet mouse named 'Serpico'. Still difficult for an investigation commissioner Nico Giraldi, this time struggling with a gang who commits theft in luxury apartments in Rome.
Nico Giraldi
Mr. Douglas
Vanessa
Osvaldo "Tapparella" Proietti
Lt. Adele Ciampini
Filotto
Olimpia Trippetta
Brigadier Gargiulo
Zagaja
Salvatore Trapanese
Lawyer Gorniani
Frustino
Ballarin's Girlfriend
Carabineer
Maniac
Gorniani's Henchman
Rosario Trapanese
Waitress at Police Station
Er Cresta's Accomplice
Marini
Director
