"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
Dardano Sacchetti
Story
Screenplay
Teodoro Corrà
Raniero Di Giovanbattista
Delegated Producer
Line Producer
Carlo Leva
Production Design
Costume Design
Adriano Fabi
Original Music Composer
Mauro Bonanni
Editor
Federico Zanni
Director of Photography
Pietro Bregni
Producer
Cesare Landricina
First Assistant Director
Luigina Lovari
Script Supervisor
Michele Pensato
Camera Operator
Edmondo Pisani
Mario Pastorini
Assistant Camera
Dante Trani
Makeup Artist
Romana Piolanti
Hairstylist
Giovanni Fratalocchi
Set Decoration
Walter Diotallevi
Assistant Editor
Bruna Abbatelli
Roberto Alberghini
Sound
Antonio Pantano
Boom Operator
Giuseppe Raimondi
Key Grip
Salvatore Gentile
Gaffer
Lamberto Palmieri
Unit Manager
Agostino Pasti
Production Secretary
Giuseppe Cicconi
Gaetano Fuzio
Administration
Sergio Mioni
Stunt Coordinator
Mario Bregni
Danilo Massi
Assistant Director
