"A mute woman, traumatized by her parents' death, faces new horrors when her cousin is murdered by a suspected killer. As danger looms, the truth proves far more complex."
Carroll Baker
as Martha Caldwell
Alan Scott
as Dr. Laurent
Ida Galli
as Jenny Ascot
Eduardo Fajardo
as Marcos
Silvia Monelli
as Annie Britton
George Rigaud
as Ralph
Franco Fantasia
as Inspector Duran
Dada Gallotti
as Mayor's Wife
Lorenzo Robledo
as Vice Commissioner
Olga Gherardi
as Rosalie
José Marco
as Father Martin
Luca Sportelli
as Capo Stazione
Ángel Menéndez
as Judge
Fabián Conde
as (uncredited)
Ágata Lys
Antonio Orengo
as -
Ricardo Valle
Rosa M. Rodríguez
as Christina
Agustín Bescos
as Pharmacist (uncredited)
Beni Deus
Lorenzo González
as
Francisco Ruiz
Romano Moraschini
as Policeman (uncredited)
Enzo Alabiso
Editor
Umberto Lenzi
Director
José F. Aguayo Jr.
Director of Photography
Screenplay
Marcello Giombini
Original Music Composer
Assistant Director
Piero Filippone
Set Decoration
Silvio Laurenzi
Costume Design
Aldo Signoretti
Makeup & Hair
Oscar De Arcangelis
Sound Engineer
Giuseppe Di Biase
Camera Operator