"Mark Terzi goes to Genoa to take on the case of a serial killer who calls himself "The Sphinx"."
Franco Gasparri
as Commissario Mark Terzi
Lee J. Cobb
as Il commedator Benzi
Nino Benvenuti
as Ghini
Ely Galleani
as Angela Frizzo
Spiros Focás
as Morini
Andrea Aureli
as Giornalista
Ida Meda
as Franca Frizzo
Massimo Girotti
as Il Questore Spaini
Roberto Caporali
as Bernardi
Guido Celano
as Mario Borelli
Francesco D'Adda
as Ragioniere di Ghini
Tom Felleghy
as Dr. Marchi
Edoardo Florio
as
Archimede Muzi
Gianni Ottaviani
as Judge Guglielmi
Leonardo Severini
as Colantuoni
Margherita Horowitz
as Maria Clerici
Cesare Di Vito
as Tommasi
Mauro Vestri
as Sports Club Director
Carmen Russo
as Girl on the yacht
Renato Basso Bondini
as Ghini's Henchman (uncredited)
Stelvio Massi
Director
Carlo Leva
Production Design
Edmondo Pisani
Camera Operator
Dante Trani
Makeup Artist
Mauro Bonanni
Editor
Raniero Di Giovanbattista
Line Producer
Screenplay
Michele Pensato
Romana Piolanti
Hairstylist
Bruna Abbatelli
Assistant Editor
Luigina Lovari
Script Supervisor
Mario Pastorini
Assistant Camera
Dardano Sacchetti
Teodoro Corrà
Delegated Producer
Costume Design
Giovanni Fratalocchi
Set Decoration
Roberto Alberghini
Sound
Pietro Bregni
Producer
Giuseppe Cicconi
Production Secretary
Salvatore Gentile
Gaffer
Gaetano Fuzio
Administration
Federico Zanni
Director of Photography
Antonio Pantano
Boom Operator
Sergio Mioni
Stunt Coordinator
Agostino Pasti
Lamberto Palmieri
Unit Manager
Story
Adriano Fabi
Original Music Composer
Cesare Landricina
First Assistant Director
Walter Diotallevi
Giuseppe Raimondi
Key Grip
Mario Bregni
Danilo Massi
Assistant Director
