Det. Lt. Bracken
Christopher George
Mary Riggs
Lynda Day George
Grace
Hilda Fuchs
Sylvia Costa (as Isabelle Luque)
Isabel Luque
Mary, elevator victim
Silvia Gambino
Coroner
Emilio Linder
Girl in Puzzle
Pilar Alcón
Karate Professor
Bruce Le
Jenny, pool victim
Cristina Cottrelli
Virginia Palmer - 1st Victim
Roxana Nieto
Carla - Aerobics Instructor
Carmen Aguado
Alister Schwartz
Paco Alvez
Det. Sgt. Holden
Frank Braña
The Dean
Edmund Purdom
Kendall James
Ian Sera
Willard
Paul L. Smith
Prof. Arthur Brown
Jack Taylor
Dr. Jennings
Gérard Tichy
Mrs. Reston
May Heatherly
Suzie - Locker Room Victim
Leticia Marfil
Original Music Composer
Stelvio Cipriani
Director
Juan Piquer Simón
Director of Photography
Juan Mariné
Screenplay
Dick Randall
Producer
Editor
Antonio Gimeno
Librado Pastor
Stephen Minasian
Carlo Maria Cordio
Special Effects
Basilio Cortijo
Writer
Roberto Loyola
Makeup Artist
Pedro Camacho
Camera Operator
Julio Bragado Darman
Assistant Director
Manuel Pinilla
Gaffer
José Luis Martínez
Hairstylist
Alicia Regueiro
Costume Design
Gonzalo Gonzalo
Set Dresser
Juan Jesús Escudero
Gumersindo Andrés
Assistant Camera
José Antonio Villalba
Costumer
Mercedes Marfil
Set Decoration
Production Manager
Francisco Ariza