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